Answer:
58.8J
Explanation:
Given parameters:
Potential energy gained = 19.6J
Let the mass of the first one = m
Mass of the second one = 3m
Unknown:
New potential energy = ?
Solution:
Potential energy is the energy due to the position of a body;
P.E = mgh
The body were raised through the same height
let the height = h
First potential energy;
P.E = 19.6 = m x g x h
Second potential energy;
P.E = 3m x g h
From the first body;
mgh = 19.6
Second body;
P.E = 3(mgh) = 3(19.6) = 58.8J
