Question

Two men took a load of 5 kg upto a height of 10metre,man A took 30 min and man B took 40min. Compare the work done by them. Only a physics master can solve it. State the reason for the answer you give.

Answer 1

I think the work done by both are same...
becoz in W = Force × displacement
==> Mass × acceleration × displacement...
* mass of both blocks is same...
* 'a' is same ( as -g )
* displacement is same ( 10 m each )

By putting values we'll get answer 500Nm

Answer 2

mass = 5kg and displacement = 10 m

so w = f * d;

=> 5kgf * 10m=50kgfm=500Nm

the work done by them is the same