Question

What happens to the potential energy of an object, if its mass is doubled and its lifted height is halved from its initial state?

• A. Becomes quadruple
• B. Becomes half
• C. Becomes double
• D. Remains same

Answer 1

The correct option is D

Remains same

Let the mass and height of the object is $m$ and $h$ respectively.
Therefore its potential energy is $mgh$.
If its mass is doubled and height is halved from the initial state then new potential energy will be $(2m\times g\times \frac{h}{2})=mgh$
Hence, in this also the potential energy remains same.