Physics Energy Question

Question

A 5.0 kg crate is pushed across a horizontal surface by a 60.0 N force directed 32°C below the horizontal. Determine the work done on the crate by this force after the crate moves 8.0 m.

Answer 1

Begin with Work = Force X Distance

Distance = 8 m

Force = ?

The force is being added at angle, therefore you must split the force into a Y and X vector. In this case, the only vector doing work is the X vector of the force.

force of X vector = 60 * cos 32 = 50.8 N

work = Force X Distance = 50.8 X 8 = 407.06 j