Subrata Kumar Choudhury and Jibananda Paul Solutions for Chapter: Effect of Energy : Work, Power & Energy, Exercise 1: EXERCISE

$1 \mathrm{g} \mathrm{f} \mathrm{cm}$ = _____ erg

$1 \mathrm{HP}=$_____ $\mathrm{watt}$

In a tug of war, the work done by losing team is positive.

Absolute unit of power in SI system is $\mathrm{watt}$.

Centripetal force is a no-work force.

The water stored in a tank has potential energy.

The negative work is called the work done by the applied force.

What is gravitational potential energy? Derive its formula.