mattystew
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starting the problem and then direction from there requestedA 38 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.
A woman stands on a scale in a moving elevator. Her mass is 58.0 kg, and the combined mass of the elevator and scale is an additional 815 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9430 N. What does the scale read during the acceleration?
A 19.5 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 77.0 N and is directed at an angle of 30.0° above the horizontal. Determine the coefficient of kinetic friction.
The drawing shows a large cube (mass = 46 kg) being accelerated across a horizontal frictionless surface by a horizontal force P. A small cube (mass = 3.6 kg) is in contact with the front surface of the large cube and will slide downward unless P is sufficiently large. The coefficient of static friction between the cubes is 0.71. What is the smallest magnitude that P can have in order to keep the small cube from sliding downward?
drawing: http://www.webassign.net/CJ/04_47.gif
(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.
A woman stands on a scale in a moving elevator. Her mass is 58.0 kg, and the combined mass of the elevator and scale is an additional 815 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9430 N. What does the scale read during the acceleration?
A 19.5 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 77.0 N and is directed at an angle of 30.0° above the horizontal. Determine the coefficient of kinetic friction.
The drawing shows a large cube (mass = 46 kg) being accelerated across a horizontal frictionless surface by a horizontal force P. A small cube (mass = 3.6 kg) is in contact with the front surface of the large cube and will slide downward unless P is sufficiently large. The coefficient of static friction between the cubes is 0.71. What is the smallest magnitude that P can have in order to keep the small cube from sliding downward?
drawing: http://www.webassign.net/CJ/04_47.gif
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