Question

A man pulls a sled a distance of 249m. the rope attached to the sled makes an angle of 30 degrees with the ground. The man exerts a force of 540N on the rope. How much work does the man do in pulling the sled in kilojoules?

Answer 1

Given data

*A man pulls a sled at a distance is s = 249 m

*Man exerted a force on the rope is F = 540 N

*The given angle is

`\theta=30.0^0`

The formula for the work done by the man in pulling the sled is given as

`W=Fs\cos \theta`

Substitute the known values in the above expression as

`\begin{gathered} W=(540)(249)\cos (30.0)^0 \\ =116445.77\text{ J} \\ =116.44\text{ kJ} \end{gathered}`