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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 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.
Q1) A dockworker loading crates on a ship finds that a 15kg crate, initially at rest...
Q1) A dockworker loading crates on a ship finds that a 15kg crate, initially at rest on a horizontal surface, requires a 85N horizontal force to set it in motion. Find the coefficient of static friction between crate and floor. Q2) A crate is pushed 5.32m along a frictionless horizontal floor by a constant 18N force directed 45 degree below the horizontal. What is the work done by force? Q3) If both mass and velocity of a ball are tripled,...
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 dockworker loading a 20kg crate onto a ship finds that if he applies a pushing...
A dockworker loading a 20kg crate onto a ship finds that if he applies a pushing force of 70n at an angle of 40 degrees below the horizontal , the crate just begins to move. what is the coefficient of static friction between the crate and the dock? Can you please help with a FBD and explain if there is acceleration or not?
A crate of toys (25 kg) is at rest on a rough horizontal surface. The coefficients...
A crate of toys (25 kg) is at rest on a rough horizontal surface. The coefficients of static and kinetic friction (respectively) are 0.5 and 0.2. What minimum force is required to cause the crate to move? Assuming this force is maintained once the crate begins moving, with what acceleration does the crate move?
A 39 kg crate sits on a horizontal floor. The coefficients of static and kinetic friction...
A 39 kg crate sits on a horizontal floor. The coefficients of static and kinetic friction between the crate and floor are 0.6 and 0.4, respectively. Use a coordinate system with +y pointing upwards. a) How much force do you need to apply to get the crate sliding along the floor? [ , , ] N b) If the crate is moving with a speed of [0.8, 0, 0] m/s, what force is it experiencing due to friction as it slides? [ , , ] N...
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...
explain why please 3.-In moving a 35.0-kg box from one side of a classroom to the...
explain why please
3.-In moving a 35.0-kg box from one side of a classroom to the other, a professor finds that a horizontal force of 300 N is necessary to set the box in motion, and a force of 240 N is necessary to keep it in motion at a constant speed. What are the coefficients of (a) static and (b) kinetic friction between the box and the floor? Starting the motion Moving at constant speed 300 N 35 kg...
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.
4. + -/0.9 points A 29.kg crate rests on a horizontal floor, and a 63-kg person...
4. + -/0.9 points A 29.kg crate rests on a horizontal floor, and a 63-kg person is standing on the crate. (a) Determine the magnitude of the normal force that the floor exerts on the crate. (b) Determine the magnitude of the normal force that the crate exerts on the person. Additional Materials Section 4.9 5. -/0.9 points A 53.0-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.780 and...
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...
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...
explain why please
3.-In moving a 35.0-kg box from one side of a classroom to the other, a professor finds that a horizontal force of 300 N is necessary to set the box in motion, and a force of 240 N is necessary to keep it in motion at a constant speed. What are the coefficients of (a) static and (b) kinetic friction between the box and the floor? Starting the motion Moving at constant speed 300 N 35 kg...
4. + -/0.9 points A 29.kg crate rests on a horizontal floor, and a 63-kg person is standing on the crate. (a) Determine the magnitude of the normal force that the floor exerts on the crate. (b) Determine the magnitude of the normal force that the crate exerts on the person. Additional Materials Section 4.9 5. -/0.9 points A 53.0-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.780 and...
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