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Yuliya22 [10]
2 years ago
13

A 0.25 kg book falls off a 2 m shelf on to a 0.5 m chair. What was the change in GPE?

Physics
1 answer:
Snowcat [4.5K]2 years ago
6 0

The equation of GPE is mgH, where m is mass, g is gravitational acceleration, and H is the height.

If we're solving for the change in GPE, then:

∆U_{g} = mg∆H

<u>Input our given values for m and g:</u>

∆U_{g} = 0.25 * 9.80 * ∆H

<u>The book falls from 2 meters high to 0.5 meters high, so:</u>

∆U_{g} = 0.25 * 9.80 * (2.0 - 0.5)

∆U_{g} = 0.25 * 9.80 * 1.5

∆U_{g} = 3.675 (J)

<u>Adjust for significant figures:</u>

∆U_{g} = 3.7 (J)

The change in gravitational potential energy was 3.7 (J)

If you have any questions on anything I did to get to the answer, just ask!

- breezyツ

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