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Force, Work, Power and Energy — Physics STD 10 — Question

ICSE BoardEnglish MediumSTD 10PhysicsForce, Work, Power and Energy1 Mark
Question
What is the work done by the moon when it revolves around the earth?
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Answer

Work done $=$ Force $\times$ Displacement
0 work done as it is rotating around the earth with $\cos \theta 90$

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