Answer:
Gravitational potential energy (GPE) is equal to the mass times the gravitational acceleration times the height.
PEg=m∗g∗h
PEg is the GPE, measured in J , where 1 J=1 kg⋅m2/s2
m is the mass, measured in kg
g is the gravitational acceleration, measured in m/s2
h is the height, measured in m
kg⋅(m/s2)⋅m=kg⋅m2/s2=J
“What is the gravitational potential energy of a 5 kg box if it is lifted 3 m from the floor?”
Mass is 5 kg → m=5
Gravitational acceleration on earth is 9.8 m/s2 → g=9.8
Height is 3 m → h=3
GPE unknown → PEg= ?
PEg=5∗9.8∗3
PEg=147
The GPE of the box is 147 J
Explanation:
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