Question

How much work they do in just holding it ?

• A. 250 J
• B. 2500 J
• C. 0 J
• D. 625 J

Answer 1

Answer: (C)

0 J

The work done by a constant force of magnitude $F$ on a point that moves a displacement (not distance) $s$ in the direction of the force is given by:
$W=F\times s$
As the men are just holding the box the value of $s$ is $0$.
Hence, the work done is $W=Fs=F\times 0=0$.