Potential Energy
Solved Video Example 1- How to Calculate Potential Energy
- Solved Video Example 2
Potential Energy
Solved Example
A girl of mass 30 kg is playing on a reversible see-saw with a boy of mass 15 kg. When the girl comes down by 3 meters, the boy goes up by 6 meters.
Which of the statements is TRUE?
The potential energy lost by the girl is more than that gained
by the boy.
The potential energy gained by the girl is lesser than that lost
by the boy.
The potential energy lost by the girl is equal to that lost by
the boy.
The potential energy lost by the girl is equal to that gained by
the boy.
How to Calculate Potential Energy
Solved Example
A stone of mass 4 kg is kept at a height of 3.5 m above the ground. Find its potential energy.
7 J
14 J
70 J
140 J