Question

A machine does $1920joule$ of work in $240second$. What is the power of the machine?

Answer 1

Step 1: Given data,

$$\begin{gathered} \mathrm{Work}\mathrm{done},\mathrm{W}=1920\mathrm{J} \\ \mathrm{time}\mathrm{taken},\mathrm{t}=240\mathrm{s} \end{gathered}$$

Step 2: Finding the power,

$$\begin{gathered} \mathrm{Power}=\frac{\mathrm{Work}\mathrm{done}}{\mathrm{time}} \\ \mathrm{Power}=\frac{1920}{240} \\ \mathrm{Power}=8watt \end{gathered}$$

Hence, the power of the machine is $8watt$.