AnthonyLWoolley AnthonyLWoolley

10-12-2020
Physics

contestada

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

Respuesta :

Eddie1Wan Eddie1Wan

10-12-2020

Answer:

B.5.4m

Explanation:

Potential Energy=mass×gravity×height

8000=150×9.8×x

8000=1470x

x=8000/1470=5.4m

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