A box of mass 3 kg is lifted 1.5 m onto a shelf. Calculate the change in its gravitational potential energy. The gravitational field strength is 10 N/kg

The change in it's gravitational potential energy is 45 joules

The parameters given in the question are

mass= 3kg

height= 1.5 meters

gravitational field strength is 10 N/kg

The formula is mgh

= 3×10×1.5

= 45

Hence the change in the gravitational field strength is 45 joules

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Explanation:

Potential energy = mass × gravitational field strength × height

OR,

Ep = mgh

Given,

Ep= 3 × 1.5 × 10

Ep= 45J

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