Question

The change in potential energy (ΔU) is equal to the negative of the work done by which force?

Options

• Frictional force

• External force applied

• Gravitational force

• Centripetal force

Answer 1

Gravitational force

Explanation:

The change in potential energy (dU) is defined as the negative of the work done by the conservative gravitational force (\[\vec F_g\]), as shown by the relation dU = -\[\vec F_g\] · d\[\vec r\].