Question

A boy weighing 50 kg climbs up a vertical height of 10 km.(given,g=10ms-2) (i) Calculate the amount of work done by him. (ii) How much potential energy does he gain?​

Answer 1

Answer:

Given

Mass = 50 kg

Height = 10 km = 10000 m

g = 10 m/s^2

work done = potiential energy = mgh= 50×10000×10

$\sf \: = 5000000 \: joule \\ \sf \: = \: 5 \times 10^{6} \: j$

This potiential energy is equal to work done against gravity.