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) You do 174 J of work while pulling your sister back on a swing, whose...

) You do 174 J of work while pulling your sister back on a swing, whose chain is 5.10 m long. You start with the swing hanging vertically and pull it until the chain makes an angle of 32.0° with the vertical with your sister is at rest. What is your sister's mass, assuming negligible friction?

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Answer #1

Length of the chain l = 5.10 m

theta = 32°

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