A rebuilt transmission in a crate sits on the floor; the total mass is 80 kg. The crate must be brought to the top of a loading dock by sliding it up a ramp 2.5 m long, inclined at 30% The shop foreman, giving no thought to the force of friction, calculates that he can get the crate up the ramp by giving it an initial speed of 5.0 m/s at the bottom and letting go. Unfortunately, friction is not negligible; the crate slides 1.6 m up the ramp, stops, and slides back down. Find the magnitude of the frictional force and the speed of the crate when it reaches the bottom of the ramp.

Answer rating: 100% (QA)

To solve this problem we need to consider the forces acting on the crate and apply the principles of conservation of energy and Newtons laws of motion ... View the full answer