Answer:
The gravitational potential energy added to the television is 176.4 J
Explanation:
Conceptual analysis
Potential Energy (U) is the energy of a body located at a certain height (h) above the ground and is calculated as follows:
U = m × g × h Formula (1)
U: Potential Energy in Joules (J)
m: mass in kg
g: acceleration due to gravity in m/s²
h: height in m
Equivalences
1 N = 1 (kg×m)/s²
1 J = N × m
Known data
m = 15kg
g = 9.8 m/s²
h = 1.2m
Problem development
We replace data in formula (1)
\(U = 15 kg * 9.8 \frac{m}{s^2} * 1.2 m = 176.4 \frac{kg*m}{s^2} * m= 176.4N*m\)
U = 176.4 J
The gravitational potential energy added to the television is 176.4 J
