Answer to Question #323385 in Classical Mechanics for trina

Question

A 12 kg crate slides down a slope as shown in the figure above. The crate starts at rest at the top of the slope and by the time it reaches the bottom it is traveling at a speed of 5.1 m s⁻¹.

What is the magnitude of the frictional force f acting on the crate as it slides down the slope? (in N to 2 s.f)

Answer 1

$F_{fr}=75.3~N.$