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Holding a piano at shoulder

publish date: 2023/08/05 21:37:00 GMT+10

volume_mute

How much work is done in holding a piano at shoulder height for 15 minutes if the piano weighs 1200 newtons and your shoulder is 1.5 meters above the ground?

1800 joule
450 joule
27000 joule
No work is done

Correct Answer

No work is done

Reference

Basic Physics: A Self-Teaching Guide

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