Question

A wheel of mass 48 kg is lifted to a height of 0.8 m. How much gravitational potential energy is added to the wheel? Acceleration Due to gravity is g = 9.8 m/s2.

A. 30.4 J
B. 3.1 J
C. 297.9 J
D. 11,321 J

Answer 1

Answer: 376.32 J

Explanation: Gravitational potential energy is the energy possessed by a body by virtue of its position.

$P.E=mgh$

m= mass of the body = 48 kg

g= acceleration due to gravity= ]$9.8m/s^2$

h= height of body= 0.8 m

$P.E=48kg\times 9.8m/s^2\times 0.8m=376.3J$ $(1kgm^2s^{-2}=1 J)$