You do 152 J of work on your sister while pulling her back on a swing, whose chain 4.7 m long. You start with the swing hanging vertically and pull it until the chain makes an angle of 26° with the vertical while your sister is at rest. What is your sister's mass, assuming negligible friction? m = kg

College Physics
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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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You do 152 J of work on your sister while pulling her back on a swing, whose chain is
4.7 m long. You start with the swing hanging vertically and pull it until the chain
makes an angle of 26° with the vertical while your sister is at rest.
What is your sister's mass, assuming negligible friction?
m =
kg
Transcribed Image Text:You do 152 J of work on your sister while pulling her back on a swing, whose chain is 4.7 m long. You start with the swing hanging vertically and pull it until the chain makes an angle of 26° with the vertical while your sister is at rest. What is your sister's mass, assuming negligible friction? m = kg
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