You Do 174 J of Work While Pulling Your Sister

question 8

Multiple Choice

You do 174 J of work while pulling your sister back on a swing,whose chain is 5.10 m long,until the swing makes an angle of 32.0° with the vertical.What is your sister's mass?

• A)22.9 kg
• B)19.5 kg
• C)26.3 kg
• D)28.4 kg

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