Question

How much work did a room attendant have done in pushing the service trolley by a force of 33.0 N to a distance of 8.25 m with an angle of 66.2 degrees.

Answer 1

By the definition of the work done, we have:

$$W=Fdcos\theta=33.0\ N\cdot8.25\ m\cdot cos66.2^{\circ}=110\ J.$$