Question

a 12 kg sousaphone is hanging 1.8 meters above the ground. how much gravitational potential energy does the sousaphone have? remember : $e_g = mgh$ $g = 10 \frac{m}{s^2}$ $e_g = ? j$

Explanation:

Step1: List given values

$m=12\ \text{kg}$, $g=10\ \frac{\text{m}}{\text{s}^2}$, $h=1.8\ \text{m}$

Step2: Substitute into gravitational PE formula

$E_g = mgh = 12 \times 10 \times 1.8$

Step3: Calculate the final value

$E_g = 216$

Answer:

$216\ \text{J}$