Question

26. A colic put a man of 40 kg on his head and
move 500 m on a plane surface. The work
done by him would be.​

Answer 1

Explanation:

Given, mass of the boy, m=40kg ;

total height gained, h=50×10cm

=500cm=5m

time taken to climb, t=5s

Work done by the boy,

W=mgh=(40)(10)(5)=2000J

Power developed, P=

t

W

=

5

2000

=400W