Question

A box of mass $4.3kg$ is lifted diagonally from point A to point B as shown in the given figure. Given that the acceleration due to gravity is 10 $m{s}^{-2}$, then the gravitational potential energy gained by the box will be ________.

• A. $6.09J$
• B. $129J$
• C. $60.9J$
• D. $12.9J$

Answer 1

The correct option is B $129J$

Given:
Mass of the object $m$ = 4.3 kg
Acceleration due to gravity $g$ = $10m{s}^{-2}$
Vertical displacement $h=3m$.
Gravitational potential energy $=m\times g\times h$
= $4.3\times 10\times 3=129joules$