Multiple Choice
Gravitational potential energy: 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?
A) 22.9 kg
B) 19.5 kg
C) 26.3 kg
D) 28.4 kg
Correct Answer:
Verified
Correct Answer:
Verified
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