Question

1
(a) Two bodies of Oequal masses are kept at heights 20m and 30m. What is the ratio of
their potential energies?

Answer 1

Explanation:

Let the equal mass of two bodies A and B be m.

Given : height h1 = 20 m

and h2 = 30 m

Potential energy of bady A = mgh1

= m x g x 20

Potential energy of body B = mgh2 = m x g x 30

Ratio P1/P2 = m x g x 20/m x g x 30 = 2/3