Answer:
D. The mass of box A is double the mass of box B.
Explanation:
Given,
The power applied to box A = The power applied to box B
⇒ Potential energy of box A = Potential energy of box B
⇒
Where, and are the masses of boxes A and B respectively,
and are the heights for box A and B respectively,
And, g is the acceleration due to gravity,
⇒
Here, = 1 meter and = 2 meters,
⇒
⇒ The masses of box A is double the mass of box B.
Option D is correct.