Question

A load of 100 kg is pulled up by 5 m. Calculate the work done. (g = 9.8 m/s²)

Answer 1

Mass of the body (m) = 100 kg
Height by which the body is lifted (h) = 5 m
Work done in lifting a body = (Weight of body) (Vertical distance)
So, W = (m) (g) (h)
Therefore,
$$\begin{gathered} \left(W\right)=\left(100\right)(9.8)\left(5\right)\mathrm{J} \\ =\boxed{4900\mathrm{J}} \end{gathered}$$
So, the work done is 4900 J.