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Pepsi [2]
3 years ago
9

A 7.40-kg object initially has 347 J of gravitational potential energy. Then an elevator lifts the object a distance of 20.6 m a

bove its previous position. How much work did the elevator perform on the object?
Physics
1 answer:
storchak [24]3 years ago
6 0

Answer:

W = 1493.9 J = 1.49 KJ

Explanation:

The work done by the elevator on the object will be equal to the gain in is potential energy:

W = ΔP.E

W = mgΔh

where,

W = Work = ?

m = mass of object = 7.4 kg

g = 9.8 m/s²

Δh = gain in height = 20.6 m

Therefore,

W = (7.4 kg)(9.8 m/s²)(20.6 m)

<u>W = 1493.9 J = 1.49 KJ</u>

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