Asked by Justin
A 22.0 kg child plays on a swing having support ropes that are 2.00 m long. A friend pulls her back until the ropes are 45.0 ∘ from the vertical and releases her from rest.
What is the potential energy for the child just as she is released, compared with the potential energy at the bottom of the swing? How fast will she be moving at the bottom of the swing? How much work does the tension in the ropes do as the child swings from the initial position to the bottom?
What is the potential energy for the child just as she is released, compared with the potential energy at the bottom of the swing? How fast will she be moving at the bottom of the swing? How much work does the tension in the ropes do as the child swings from the initial position to the bottom?
Answers
Answered by
Damon
U = m g h = m g 2(1-cos 45)
(1/2) m v^2 = U
The tension is PERPENDICULAR to the motion, does ZERO work. Why did you ask !!! ???
(1/2) m v^2 = U
The tension is PERPENDICULAR to the motion, does ZERO work. Why did you ask !!! ???
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.