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How high does a 150 kg piano have to be lifted to have 8000 J of gravitational potential energy? A. 3.1 m B. 5.4 m C. 6.2 m D. 1.2 m
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How high does a 150 kg piano have to be lifted to have 8000 J of gravitational potential energy?

A. 3.1 m

B. 5.4 m

C. 6.2 m

D. 1.2 m

User Fra
by
5.1k points

1 Answer

2 votes

Answer:

B.5.4m

Step-by-step explanation:

Potential Energy=mass×gravity×height

8000=150×9.8×x

8000=1470x

x=8000/1470=5.4m

User Akash Raghav
by
4.5k points
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