
Why is the friction equal to the force?

Why is the friction equal to the force? A crate of mass 180 kg sits on...
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...
If you push with a horizontal 650-N force to a 90-kg crate initially at resting on the floor, what must acceleration be? The static and kinetic energy coefficient of friction are us- 0.4, uk= 0.25 respectively.
A 50-N crate sits on a horizontal floor where the coefficient of static friction between the crate and the floor is .50 and that of kinetic is .40 gradually increasing horizontal force to the right is applied to the crate how would you describe the motion of the box at the moment forces reached to 20 N (a) Not moving (b) not moving bit anootbto move (c) moving with a constant speed (d) Accelerating
A horizontal force of 153 N is used to push a 46.0 kg packing crate a distance of 7.00 m on a rough horizontal surface. The acceleration of gravity is 9.81 m/s2 . If the crate moves with constant velocity, calculate a) the work done by the force. Answer in units of J. b) the coefficient of kinetic friction.
A crate of 37.2-kg tools rests on a horizontal floor. You exert a gradually increasing horizontal push on it and observe that the crate just begins to move when your force exceeds 322 N . After that you must reduce your push to 240 N to keep it moving at a steady 29.1 cm/s . A.What is the coefficient of static friction between the crate and the floor? B.What push must you exert to give it an acceleration of 1.11...
A crate of mass 26.0 kg rests on a level floor. The coefficients of static friction and kinetic friction between the crate and the floor are μs = 0.50 and μk = 0.21, respectively. 1. If a horizontal force of magnitude 89.2 N is applied to the crate, what is the magnitude of the force due to friction?
2) A 35.0 kg crate is being push across a horizontal floor with
a force F = 150 N that makes an angle θ = 29.0° with the horizontal
as illustrated in the figure below. Find the magnitude of the
acceleration of the crate, given that the coefficient of kinetic
friction between the crate and the floor is 0.20.
3) A 7.00 kg block is pressed against a vertical wall by a force
(→F), as shown in the figure below....
By pulling a on rope attached to a crate of mass 77.0 kg, the crate is dragged across a floor. Let the coefficient of static friction between the crate and the floor be 0.830 and the angle between the rope and horizontal is 39.1 °. Find the minimum force required to move the crate. At a later time the crate is now dragged with this same force, and has already started moving, on a wet floor where the kinetic friction...
) A mass of 6 kg is resting on a horizontal with friction with a coefficient of static friction of 0.71 and coefficient of kinetic friction of 0.30. A force of 9 N is applied vertically upwards to the mass, and a force of 15 N is applied vertically downwards to the mass. What is the maximum static frictional force for this situation in Newtons?
1. A crate of mass 67.3 kg rests on a level surface, with a coefficient of kinetic friction 1.49. You push on the crate with an applied force of 1,469. What is the magnitude of the crate’s acceleration as it slide (b) Take the same crate of mass M 1306 kg, and the same coefficient of kinetic friction 0.3 but now place the crate on an inclined surface, slanted at some angle θ above the horizontal. Now instead of pushing...