Physics, 04.11.2019 23:31 DarinKing2005
A25 kg child plays on a swing having support ropes that are 2.20 m long. a friend pulls her back until the ropes are 42◦ from the vertical and releases her from rest.
(a) what is the potential energy for the child just as she is released, compared to the potential energy at the bottom of the swing?
(b) how fast will she be moving at the bottom of the swing?
(c) how much work does the tension in the ropes do as the child swings from the initial position to the bottom of the swing? hint: think about the angle between the tension force and the direction of motion.
Answers: 3
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A25 kg child plays on a swing having support ropes that are 2.20 m long. a friend pulls her back unt...
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