A backpack has a mass of 8 kg. It is lifted and given 54.9 J of gravitational potential energy. How high is it lifted? Acceleration due to gravity is g = 9.8 m/s2.

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asked Aug 6, 2018 33.4k views

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A backpack has a mass of 8 kg. It is lifted and given 54.9 J of gravitational potential energy. How high is it lifted? Acceleration due to gravity is g = 9.8 m/s2.

Mathematics
college

Donnit asked

by Donnit

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1 Answer

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Potential energy = mass * g * height
So here we have:-
54.9 = 8 * 9.8 * h
So
h = 54.9 / (8*9.8) = 0.7 metres

Vikram Biwal answered Aug 12, 2018

by Vikram Biwal

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