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Find Ffs and Fk for each of the following
Problems: 1. A 24 kg crate initially...
A dockworker loading crates on a ship finds that a 20-kg crate, initially at rest on...
A dockworker loading crates on a ship finds that a 20-kg crate, initially at rest on a horizontal surface, requires a 73-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 51 N is required to keep it moving with a constant speed. Find the coefficients of static and kinetic friction between crate and floor.
A dockworker loading crates on a ship finds that a 25-kg crate, intially at rest on...
A dockworker loading crates on a ship finds that a 25-kg crate, intially at rest on a horizontal surface, requires a 72-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 50 N is required to keep it moving with a constant speed. Find the coefficients of static and kinetic friction between crate and floor. static friction kinetic friction
3. A horizontal force of 375 N is needed to just set a 50.0 kg crate,...
3. A horizontal force of 375 N is needed to just set a 50.0 kg crate, lying on a level floor in motion, while a horizontal force of 189 N is needed to keep it in motion at constant velocity. (a) Find the coefficients of static and kinetic friction. (b) If the 375 N force is maintained after the crate starts to move, what is the acceleration of the crate? Show the free body diagram in each of the 3...
3- A 45 kg crate is dragged at constant velocity 8.2 m across a horizontal floor...
3- A 45 kg crate is dragged at constant velocity 8.2 m across a horizontal floor due to an horizontal force F = 100 N. If the coefficient of kinetic is 0.25. Find: a. The work done for each force acting on the crate. b. The total work done on the crate
A crate whose mass is 22.5 kg is being pushed along a floor. There is an...
A crate whose mass is 22.5 kg is being pushed along a floor. There is an opposing horizontal force equal to 70.0 N. The pushing force is 125 N, but it is being applied at an angle of 35.0 degrees above the horizontal. The crate is initially at rest. Determine the following: a.) the acceleration of the crate b.) its velocity after 4.00s c.) its displacement after 4.00s d.) the normal contact force
renced Reviequestions 120. Each of the following diagrams shows a different block being pushed to the...
renced Reviequestions 120. Each of the following diagrams shows a different block being pushed to the right by a horizontal force across a horizontal surface at constant velocity. 6 kg 2 kg Polished wood Rough wood 116. An empty wooden crate slides across a warehouse floor. If the crate was filled, the coefficient of kinetic friction between the crate and the floor would (1) decrease (2) increase (3) remain the same 117. An empty wooden crate slides across a warehouse...
A woman pushing a 35.0-kg crate at a constant speed for 10.4 m across the floor...
A woman pushing a 35.0-kg crate at a constant speed for 10.4 m across the floor does 410 J of work by applying a constant horizontal force of magnitude F on the crate. (a) Determine the value of F. N (b) If the woman now applies a force greater than F, describe the subsequent motion of the crate. a.The crate's speed would remain constant over time. b.The crate's speed would increase with time. c.The crate would slow and come to...
A 28.0-kg block is initially at rest on a horizontal surface. A horizontal force of 73.0...
A 28.0-kg block is initially at rest on a horizontal surface. A horizontal force of 73.0 N is required to set the block in motion, after which a horizontal force of 55.0 N is required to keep the block moving with constant speed. (a) Find the coefficient of static friction between the block and the surface. (b) Find the coefficient of kinetic friction between the block and the surface.
A van accelerates down a hill (see figure below), going from rest to 30.0 m/s in...
A van accelerates down a hill (see figure below), going from rest to 30.0 m/s in 6.30 s. During the acceleration, a toy m = 0.490 kg) hangs by a string from the van's ceiling. The acceleration is such that the string remains perpendicular to the ceiling. (a) Determine the angle e. (b) Determine the tension in the string. +-/2 points SerCP10 4.P.039. My Notes + Ask Your Teacher A dockworker loading crates on a ship finds that a 21-kg...
A 25.0-kg crate is initially at rest at the top of a ramp that is inclined...
A 25.0-kg crate is initially at rest at the top of a ramp that is inclined at an angle θ = 30.0 ◦ above the horizontal. You release the crate and it slides 1.25 m down the ramp before it hits a spring attached to the bottom of the ramp. The coefficient of kinetic friction between the crate and the ramp is 0.400 and the constant of the spring is k = 5000 N/m. How far does the crate compress...
A dockworker loading crates on a ship finds that a 25-kg crate, intially at rest on a horizontal surface, requires a 72-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 50 N is required to keep it moving with a constant speed. Find the coefficients of static and kinetic friction between crate and floor. static friction kinetic friction
3. A horizontal force of 375 N is needed to just set a 50.0 kg crate, lying on a level floor in motion, while a horizontal force of 189 N is needed to keep it in motion at constant velocity. (a) Find the coefficients of static and kinetic friction. (b) If the 375 N force is maintained after the crate starts to move, what is the acceleration of the crate? Show the free body diagram in each of the 3...
3- A 45 kg crate is dragged at constant velocity 8.2 m across a horizontal floor due to an horizontal force F = 100 N. If the coefficient of kinetic is 0.25. Find: a. The work done for each force acting on the crate. b. The total work done on the crate
renced Reviequestions 120. Each of the following diagrams shows a different block being pushed to the right by a horizontal force across a horizontal surface at constant velocity. 6 kg 2 kg Polished wood Rough wood 116. An empty wooden crate slides across a warehouse floor. If the crate was filled, the coefficient of kinetic friction between the crate and the floor would (1) decrease (2) increase (3) remain the same 117. An empty wooden crate slides across a warehouse...
A van accelerates down a hill (see figure below), going from rest to 30.0 m/s in 6.30 s. During the acceleration, a toy m = 0.490 kg) hangs by a string from the van's ceiling. The acceleration is such that the string remains perpendicular to the ceiling. (a) Determine the angle e. (b) Determine the tension in the string. +-/2 points SerCP10 4.P.039. My Notes + Ask Your Teacher A dockworker loading crates on a ship finds that a 21-kg...
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