Question

A 100 N force that makes an angle of 30^o with the horizontal is used to move a 10 kg crate across a smooth floor. The crate moves through a distance of 500 cm. Find the work done by the force.

Answer 1

The work done by the force

$$W=Fd\cos\theta\\ =100\:\rm N*5\: m*\cos30^\circ=433\: J$$