Question

A load of 100 kg is pulled up by 5 m. Calculate the work done. Take $g=9.8m{s}^{-2}$

• A. 5000 J
• B. 4900 J
• C. 4800 J
• D. 4700 J

Answer 1

The correct option is B

4900 J

Given, the mass of the object $m=100kg$, height $h=5m$ and $g=9.8m{s}^{-2}$.

We know work done $W=mgh$

So, $W=100\times 9.8\times 5=4900J$