Question

1. determine the amount of gravitational potential energy for a 2 kg book on a shelf that is 3 m high.

48.075 j
6 j
58.86 j
18.62 j

Explanation:

Step1: Recall gravitational PE formula

Gravitational potential energy: $PE = mgh$

Step2: Define given values

$m=2\ \text{kg}$, $g=9.81\ \text{m/s}^2$, $h=3\ \text{m}$

Step3: Substitute values into formula

$PE = 2 \times 9.81 \times 3$

Step4: Calculate final value

$PE = 58.86\ \text{J}$

Answer:

C. 58.86 J