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

asked Sep 7, 2021 91.4k views

0 votes

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

by Fra

7.0k points

Please log in or register to add a comment.

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

Akash Raghav answered Sep 14, 2021

6.5k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

7.5m questions

10.1m answers