Question

Lee pushes horizontally with a force of 85 Non a 37 kg mass for 21 m across a floor.Calculate the amount of work Lee did.Answer in units of J.

Answer 1

The work done by a force can be calculated with the formula below:

`W=F\cdot d`

Where W is the work in Joules, F is the force in Newtons and d is the distance in meters.

So, if an 85 N force is applied over 21 meters, the work done is:

`\begin{gathered} W=85\cdot21 \\ W=1785\text{ J} \end{gathered}`

Therefore the work done by Lee is 1785 J.