Answered

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2. What is the gravitational potential energy of a lkg box that is placed on a shelf that is 3m high?​

Sagot :

Princecharlepasionidn

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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