Question

Calculate the work done by a machine of $50W$ power rating in $30seconds.$

Answer 1

Step 1: Given that

$Power\left(P\right)=50W$

$Timetaken\left(t\right)=30seconds$

$Workdone=?$ (To be calculated)

Step 2: Calculating work done by a machine

Power can be calculated as,

$$\begin{gathered} Power\left(P\right)=\frac{Workdone\left(W\right)}{Time\left(t\right)} \\ \Rightarrow 50W=\frac{W}{30s} \\ \Rightarrow W=1500J \end{gathered}$$

Hence, the work done by a machine is $1500J$.