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Alenkinab [10]
3 years ago
10

The third floor of a house is 8m above street level. How much work is needed to move a 136kg refrigerator to the third floor?

Physics
1 answer:
jonny [76]3 years ago
8 0

m = Mass of the refrigerator to be moved to third floor = 136 kg

g = Acceleration due to gravity by earth on the refrigerator being moved = 9.8 m/s²

h = Height to which the refrigerator is moved  = 8 m

W = Work done in lifting the object

Work done in lifting the object is same as the gravitational potential energy gained by the refrigerator. hence

Work done = Gravitation potential energy of refrigerator

W = m g h

inserting the values

W = (136) (9.8) (8)

W = 10662.4 J



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The correct answer is B

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