Question

a 4.5 kg textbook is sitting on a table 0.8 meters above the ground. how much gravitational potential energy does the textbook have? remember : $e_g = mgh$ $g = 10 \frac{m}{s^2}$ $e_g = \boxed{?}$ j

Explanation:

Step1: Identify given values

We have \( m = 4.5\space kg \), \( g = 10\space \frac{m}{s^2} \), and \( h = 0.8\space m \). The formula for gravitational potential energy is \( E_g=mgh \).

Step2: Substitute values into formula

Substitute the values into the formula: \( E_g=(4.5)\times(10)\times(0.8) \).

Step3: Calculate the result

First, multiply \( 4.5 \) and \( 10 \): \( 4.5\times10 = 45 \). Then multiply the result by \( 0.8 \): \( 45\times0.8 = 36 \).

Answer:

\( 36 \)