Question

When two different stones of masses $\text{1 kg}$ and $\text{2 kg}$ are taken to the same heights, then:

• A. The potential energy of the stone of mass 1 kg is more than that of the 2 kg stone.
• B. The potential energy of the stone of mass 2 kg is more than that of the 1 kg stone.
• C. The potential energy of both the stones would be the same.
• D. Cannot be judged with the given information.

Answer 1

The correct option is B

The potential energy of the stone of mass 2 kg is more than that of the 1 kg stone.

Potential energy, PE $=m\times g\times h$
where $m$ is the mass, $g$ is the acceleration due to gravity and $h$ is the height above the ground to which the object is raised.
Potential energy is directly proportional to the mass of the object. Therefore, the stone of mass $\text{2 kg}$ would have higher potential energy than a stone of mass $\text{1 kg}$ for the same vertical height.