a. Question 4 near a marsh How much force must he apply to the sled? (b) If all other conditions are the same but the ramp has a friction force of 1.9 N, what is the acceleration? (b) What does the scale read if the elevator moves upward while speeding up at a rate 3.8m/s2 ? When the freight car begins to move, the string makes an angle of 35.0with the vertical. 5 - When you bend your knee, the quadriceps muscle is Ch. (b) What does the scale read if the elevator moves upward while speeding up at a rate 3.8m/s2 ? Assume that both, Q:One or more external forces, large enough to be easily measured, are exerted on each object enclosed, A:For case (a); -Base of Support: This consists of the area enclosed by the outmost edges of the body in contact with the supporting surface of surfaces. 60 N C. 180 N D. 600 N 1 See answer Advertisement JemdetNasr Answer: C. 180 N Explanation: -As a muscle's velocity of contraction increases, its maximum force of contraction decreases, capacity to do work 5 - Two identical 2.0 kg blocks are stacked as shown Ch. This is a full-time position that will require working occasional weekends, nights, and holidays. acceleration due to, Q:There is a 67 kg rubber sled on a wet concrete floor. 5 - A 2.0-m-long, 500 grope pulls a 10 kg block of ice Ch. 5 - a. The coefficient of kinetic friction between the grass and the sled is 0.30. Quantity of angular motion possessed by a body measured as the product of moment of inertia and angular velocity Associate's Degree in Applied Science, Animal Health Technology, or similar field is preferred, with at least two years of work experience in animal control. The road is slick,, A:(a)The resultant of two forces F1 andF2 is given by, Assume the clothesline is massless. First week only $4.99! 60 N Kf C. 180 N | 60kg D. 600 N Disti Show transcribed image text Expert Answer Dear 5 - It takes the elevator in a skyscraper 4.0 s to Ch. (a) If the crate doesnt move, whats the magnitude of the static friction force? A. Consider two blocks, A and B, where m, < mp. Lloyds mirror provides one way of obtaining a double-slit interference pattern from a single source so the lig 9.39 The flywheel of a gasoline engine is required to give up 500 J of kinetic energy while its angular velocit For a solid, we also define the linear thermal expansion coefficient, a, as the fractional increase in length p Write each number in scientific notation. A:Mass of person = m = 58 kg How much force must he 'apply to the sled? The max mechanical advantages for the brachialis, biceps, and brachioradialis occur between angles at the elbow of approximately 75-90 degrees. 1. 5 - The two angled ropes are used to support the crate Ch. 3 32. What is linear momentum and calculating it? A football player at practice pushes a 55 kg blocking sled across the field at a constant speed. If the resulting acceleration is 0. See Answer 5 - The rolling resistance for steel on steel is quite Ch. 5 - An astronauts weight on earth is 800 N. What is Ch. Its engines produce 1.250107 N of thrust, and air resistance is 4.50106 N. What is the rocket's acceleration? 5 - A light block of mass m and a heavy block of mass Ch. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. -(Law of inertia)A body will maintain a state of rest or constant velocity unless acted on by an external force that changes the state, the tendency of an object to maintain its current state of motion, whether motionless or moving at a constant velocity, The magnitude of vertical GRF during level ground running is 2-3 times the runners body weight; GRF is affected by rear foot, mid foot, and forefoot strikers; stride length generates more GRF too and can be counterproductive in runners. (b) The elevator accelerates upward momentarily at the rate of 2 m/s2. A1,100 kg car comes uniformly to a stop. accelerates 0.01, Q:6. the pencil does not, A:As per Newton's third law, there is always an equal and opposite force to every force. the point around which the mass and weight of a body are balanced in all directions OR The point about which the sum of torques produced by the weights of the body segments is equal to zero. A 5.00105 -kg rocket is accelerating straight up. . 5 - Its possible for a determined group of people to Ch. How much force must he apply to the sled?A. Show that the mass will slide down the plane if s tan , where s is the coefficient of static friction between the block and the plane. Perfectly plastic: objects deform and stick together The mass of the boat plus trailer is 700 kg. The moment of inertia (I) represents an objects resistance to angular change about some axis A 1100-kg car pulls a boat on a trailer. Suddenly your Ch. Two football players are pushing 60 kg blocking sled across the field at a constant speed of 2.0 m/s. (a), A:When a body is at rest, the force that is required to just start the motion of the object from rest, Q:55. m = total body mass One is a 1,950-N forward push by the, A:(a) Forces of 7.6N at 38 degrees and 11.8N at 143 degrees act at a point.Calculate the magnitude and direction of their resultant. What does the scale read then? FIGURE 4 60 N Distr C.180 N Lc D.600 N. Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. What force is needed to, A:The force required to accelerate the sled is given by Watch these videos for an in-depth look. High School answered expert verified A football player at practice pushes a 80 kg blocking sled across the field at a constant speed. 300 N The mass of the pig is 200 kg. vo = 13.4 m/s (130 mi/h) H = mk2w. r = radius of rotation, -When angular momentum is conserved, changes in body configuration produce a tradeoff between moment of inertia and angular velocity, with a tuck position producing greater angular velocity, Decrease it; the more closely mass is distributed to the axis of rotation, the easier it is to initiate or stop angular motion. 5 - A ball is thrown straight up. (b) What is the tension in the rope if he accelerates upward at a rate of 1.50 m/s2? 60 N C. 180 N D. 600 N. Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy, Educator app for What are some examples of the law of inertia? If the engine generates a 4200 N Applied force,, A:Given data: 0.20 m B. 1 A car with a mass of 1000.0 kg accelerates from 0 to 90.0 km/h in 10.0 s. (a) What is its acceleration? (b) iPad. The coefficient of kinetic friction between the grass and the sled is 0.30. Want better grades, but cant afford to pay for Numerade? 5 - A horizontal rope is tied to a 50 kg box on Ch. Limbs move in the direction of the applied force - Concentric muscle action (positive work) a. The coefficient of static friction between sled and grass is 0.73, and the coefficient of kinetic friction between sled and grass is 0.68. (b) What is the size of the force acting on it? 18 N B. 5 - Suppose you are holding a box in front of you and Ch. How much force must be produced by the biceps brachii at a perpendicular distance of 3 cm from the axis of rotation at the elbow to support a weight of 200 N at a perpendicular distance of 25 cm from the elbow? 5 - Elite quarterbacks can throw a football 70 m. To Ch. How much force must he apply to the sled?A. *Response times may vary by subject and question complexity. What is the net force on the motorcycle? If a 100 kg footbalil player only pushes horizontally against the sled, how large must the horizontal force e to keep the sled moving? Depends on qualifications and experience. 5 - What is the tension in the rope of Figure P5.42 Ch. (a) Construct free-body diagrams for each block. Complete the following table Since the floor is smooth , contribution of all frictional forces = 0. F = 400 N (b) Find the maximum acceleration the truck can have before the box slides. 1,5 m. Enter your parent or guardians email address: Whoops, there might be a typo in your email. Tucking reduces moment of inertia about the hands, so less torque will be required to rotate about the hands. How much force must he apply to the sled?A. A football player at practice pushes 65 kg blocking sled across the field at a constant speed. 2. type of molecular interaction between the surfaces. H1 = H2 Fnet = net, Q:FRICTION initial speed of ball , u = 0 m/s -how quickly or slowly work is done The block just begins to slide up the inclined plane when the pushing force shown is 70 N. 60 N C. 180 N D. 600 N Solution Verified Create an account to view solutions Recommended textbook solutions A Mass of 15.0 kg is on an incline with a coefficient of static friction of 1. relative roughness and hardness of the surfaces. m = mass of block. 180 N b. (b) What is the force in the hitch between the car and the trailer if 80% of the resisting forces are experienced by the boat and trailer? The coefficient of kinetic friction between the grass and the sled is .30.Part AHow much force must he apply to the sled?ANSWER:Problem 9Zach, whose mass is 73 kg, is in an elevator descending at 12 m/s . We have step-by-step solutions for your textbooks written by Bartleby experts! A.ON B. How much force must he apply to the sled? (a) What is the tension in the rope if he climbs at a constant speed? Explain why normalized relations may not comprise an efficient physical implementation structure. 5 - Two blocks are connected by a string as in Figure Ch. -Since the diver cannot gain angular momentum in the air he must take off with sufficient angular momentum to complete the required number of rotations. Four blocks EACH of mass m = 10 kg are arranged as shown, A:massofeachblock(m)=10kgF1h=90N(toright), Q:Problem# 4: A trailer with a mass of 700 kg is pulled by a 2000-kg A 500 N BALIKBAYAN BOX WAS UNLOADED BY A DELIVERY TRUCK IN A DRIVEWAY. Given the known mass and the observed, A:Given Snapsolve any problem by taking a picture. Balanced OR Unbalanced 4 How much force musthe apply to the sled? 20 N A 20.O-g ball hangs from the roof of a freight car by a string. 11. How much force must he apply to the sled. Draw a free body, Q:April works at the grocery store. We have to calculate net force acting, Q:An object has a mass of 300 kg. The acceleration is, Q:What force is needed to accelerate a sled (mass=55kg) at 1.4 m/s2 on horizontal frictionless ice, A:Given a. (a) What is the acceleration of the freight car? (b) What is the minimum possible value of the coefficient of static friction between the crate and the floor? answer choices 18 N 60 N 180 N 600 N Question 9 60 seconds The relative angle present at the joint is close to the angles of attachment of the elbow flexors. 588 N The rotary effect created by an applied force (i.e. the collision. -The greater the amount of friction is between an object and the surface or surfaces it contacts, the greater is the force requirement for initiating or maintaining motion. W = work done on an object(in joules) The ramp is tilted at 20 and is frictionless. 5 - A 2200 kg truck has put its front bumper against Ch. Once they stop pushing; how far will the sled slide before coming to rest? or 18 N MRT B. (b) What is the net force on the car? (increases in impact velocity and temp increase COR). ---When the line of action of a body's weight (directed form the CG) moves outside the base of support, a torque is created that tends to cause angular motion of the body, thereby disrupting stability, with the CG falling toward the ground. How much force does an 80 kg astronaut exert on Ch. Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. 5 - A kangaroo carries her 0.51 kg baby in her pouch Ch. 5 - a. 5 - Blocks with masses of 1.0 kg, 2.0 kg, and 3.0 kg Ch. 200 N The coefficient of the static friction is 0.3. a) What force does the earth exert on the box? How much force must he apply to the sled? (b) What is the tension in the string? Limbs move in the direction opposite the applied force - Eccentric muscle action (negative work) the best answet. The coefficient of kinetic friction between the grass and the sled is 0.30. The coefficient of kinetic friction between the grass and the sled is 0.30. What is a resultant joint torque in the body? Acceleration, a = 2.0 m/s2, Q:The contestant now pulls the block of ice with a rope QUALIFICATIONS: Candidate must have excellent equipment, computer, and management skills. 5 - In Figure Q5.21, block 2 is moving to the right. Ch. 60 N 18 N 600 N C. d. Show Answer Create an account. The coefficient of kinetic friction between the grass and the sled is 0.30. Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations. What is the moment of inertia and how do we calculate it? Get 5 free video unlocks on our app with code GOMOBILE, foothall player at prartice pushes 200 pound blocking sled across the field constanr speeo Howmuch force must he apply to the sled? 60 N C. 180 N D. 600 N. Find answers to questions asked by students like you. 5 - An astronaut takes his bathroom scale to the moon Ch. Discuss range of motion, speed, and muscle force in the human body with levers? Free-Body Diagram 5 - A wood block, after being given a starting push, Ch. 5 - Land Rover ads used to claim that their vehicles Ch. 0.11 m A- 3, A:Consider an object for which the distancest given as a function of timet. Upon differentiating, Q:B 5 - Youve always wondered about the acceleration of Ch. m = 55 kg Its engines produce 1.250107 N of thrust, and air resistance is 4.50106 N. What is the rocket's acceleration? -potential: energy due to position What must aybe, Q:1. a) A boat moves through the water with two forces acting on it. defensive back vs wide receiver in football, when one body exerts a force on a second, the second body exerts a reaction force that is = in magnitude and opposite in direction of the first body 5 - Two workers are sliding a 300 kg crate across the Ch. The mass of the Draw a force diagram for, A:SOlution: given that Acceleration (a) = 2.5 m/s2 The coefficient of static friction between sled and grass is 0.73, and the coefficient of kinetic friction between sled and grass is 0.68. (b) What is the net force on the car? You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Acceleration of sled 18 N B. 5 - A person with compromised pinch strength in his Ch. 5 - Josh starts his sled at the top of a 3.0-m-high Ch. (a) What Is the acceleration of the crate? (b) If all other conditions are the same but the ramp has a friction force of 1.9 N, what is the acceleration? e = hb/hd I = moment of inertia A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. (a) What Is the tension in the rope if he climbs at a constant speed? *The crew members are applying an impulse to the toboggan to change the toboggan's momentum from zero to a max amount. F F = 20 N 3. 5 - The air is less dense at higher elevations, so Ch. Experts are tested by Chegg as specialists in their subject area. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. This diagram indicates all types of, Q:6. A 7.0-N force parallel to an incline is applied to a 1.0-kg crate. Show that the mass will slide down the plane if s tan , where s is the coefficient of static friction between the block and the plane. 5 - A 3.0 kg puck slides due east on a horizontal Ch. AGARWAL-PHY-166 5 - For Questions 17 through 20, determine the tension Ch. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. What happens to the volume of the water? Generally the force that must be applied to the sled is equal to the frictional force experienced by the sled which is mathematically represented as, This site is using cookies under cookie policy . Force needed to accelerate, Q:Determine the speed of block D if end A of the rope is pulled of 25 N. The surfaces of the blocks are rough. (a), Q:Q5) A child pulls a wagon with a force of 20N by a rope making an angle of 25 with the increased before the object starts moving and, A:When a body is in motion, it feels a resistance due to its interaction with its surroundings. Check out a sample Q&A here See Solution star_border first, Fa =, Q:Susan gently pushes the tip of her finger against the eraser on her pencil and Get 5 free video unlocks on our app with code GOMOBILE. (b) What is the minimum possible value of the coefficient of static friction between the crate and the floor? 5 - A 4000 kg truck is parked on a 7.0 slope. of an applied, A:Letthemassofblock=mVelocityofblock=ConstantAppliedforce=Fapp, Q:(I) Sketch the free-body diagram of a baseball (a) at the moment it is hit by the bat, and again (b), A:Part (a) -a mechanical advantage greater than 1.0 allows the force applied (muscle) to be less than the resistive force to produce an equal amount of torque This problem has been solved! block on the, Q:9) Two blocks, A and B, are being pulled to the right along a horizontal surface by a horizontal, Q:Group Practice Problem: A 100 kg shot putter pushes forward and upward on a 4 kg 5 - Running on a treadmill is slightly easier than Ch. The figure shows the overhead views of four situations in which forces act on a, A:Q7. (a) What is A force of 45 Newtons is required to start a 5.0 kg box moving across a horizontal. Q:(1) A mug rests on an inclined surface, as shown. What mass would a ball need to have if it is thrown at 34 m/s and stops a 78 kg person moving at 3 m/s when they catch it? If a 100 kg footbalil player only pushes horizontally A 0.250 kg toy car moving with a speed of .860 m/s collided with a wall. near a forest a., Q:1) An object with a force accelerates as shown in the equations: (the picture) Solo Practice Practice 17 Questions Show answers Question 1 900 seconds Q. The speed of the person sitting on the chair relative to the chair and relative to Earth. a) What is the net acceleration on the box?, Q:Mary applies a force of 75 N to push a box with an acceleration of 0.43 m/s?. The coefficient of kinetic friction between the grass and the sled is 0.30. 5 - In a head-on collision, a car stops in 0.10 s from Ch. Acceleration of drone = 5.0 m/s2 (most impacts are somewhere between), When two bodies undergo a direct collision, the difference in their velocities immediately after impact is proportional to the difference in their velocities immediately before impact; coefficient of restitution (COR) measures the elasticity of an impact Force exerted on the object The wheels of a midsize car exert a force of 2100 N backward on the road to accelerate the car in the forward direction. Start your trial now! An object is at rest an will remain at rest, Ability to resist a disruption of equilibrium A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. 5 - The 100 kg block in Figure P5.76 takes 6.0 s to Ch. 5 - Two blocks are at rest on a frictionless incline, Ch. In most human movement, changes in momentum result from? What is, A:Here given the mass 15 kg is on incline with a coefficient of static friction 0.875 . The figure below represents a cart viewed from above being pulled by two children (PLS HELP ME NOW!!!!!) The coefficient of kinetic friction between the grass and the sled is 0.30. Explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion. d = force's moment arm, shortest (perpendicular) distance between a force's line of action and an axis of rotation (joint). Free body diagram, Q:Q5) A child pulls a wagon with a force of 20N by a rope making an angle of 25 m.a= Fnet 5 - An early submersible craft for deep-sea Ch. The force of friction on the sled, A:Since you have posted a question with a multiple sub parts, we will solve first three sub - parts, Q:Sledding A sled with a mass of 80.0 kg is pulled Angle,=140, Q:A hoist is used to lift a 780 kg car upward with an acceleration of 0.110 m/s. D.900 N Acceleration of the elevator = a= ??? -Angular velocity () increases when the MOI decreases and it decreases as the diver increases MOI. The scale reads 800 N. (a) What is the person's mass? the acceleration. C.600 N 2 See answers Advertisement Lanuel The amount of force the football player must apply to the sled is 176.4 Newton. If the force of friction including air resistance is 250 N and the acceleration of the car is 1.80 m/s2, what is the mass of the car plus its occupants? Conceptual question: The block below slides with constant velocity under the action The static, A:Given 5 - The drag force is an important fact of life for Ch. From the, Q:The rocket sled shown in Figure 4.5 accelerates at a rate of27.0m/s2. to accelerate a 900-kg rocket Must have experience with both pets and livestock animals in a commercial setting and some experience with wildlife and exotic animals. 5 - A 2.7 g Ping-Pong ball has a diameter of 4.0 cm. Ch. and, A:F1=8N,30abovehorizontalF2=10N,45belowhorizontalf=-6N,alonghorizontalNetforce, Q:Problem 5: Two blocks are connected by a massless rope as shown below. What is the tension produced on the clothesline by the dress? t = time taken to do the work (d) If the elevator had no brakes and the cable supporting it were to break loose so that the elevator could fall freely, what would the spring scale read? angle of inclination of ramp, = 20o Once they stop pushing; how far will the sled slide before coming to rest? A 1100-kg car pulls a boat on a trailer. What is an example of law of acceleration? 5 - The wood block in Figure Q5.22 is at rest on a Ch. Find answers to questions asked by students like you. (a) What Is the acceleration of the crate? 5 - MCAT-Style Passage Problems Sliding on the Ice In Physics for Scientists and Engineers, Technology Physics for Scientists and Engineers: Foundations https://www.youtube.com/watch?v=3rZR7FSSidc. T = Fd force acting on the 50 kg block shown if. Draw a free-body diagram on a coordinate plane for this situation. Candidates will also be on-call at times. 5 - Raindrops can fall at different speeds; some fall Ch. A spring is stretched by applying a force to it by hands. N as, Q:5. One is a 2000N forward push by the, Q:A man pushes a 92 kg crate with 272 N of force.The crate experiences a force of friction A football player pushes a 670 N blocking sled. Why does the NFL use artificial turf? 5 - Zach, whose mass is 80 kg, is in an elevator Ch. (a) When the truck accelerates forward, what force accelerates the box? Impulse = Ft
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