Question

When a 9000 N lifter moves from ground level to the top of a building
400m above the ground level, the change in gravitational potential energy will
be:
a. 9.9 x 106
b. 3.6 x 106
7.3 X 106
d. 1.2 x 106
6.7 x 106​

Answer 1

Answer:

Δ potential energy = Weight times Δ height =  9000/1000*400/1000 = 3.60 Mjoule ...corresponding to 1 kwh

Explanation:

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