Answer to Question #5366 in Mechanics | Relativity for Mario

Question #5366
A 34 kg child on a 1.0 m long swing is released from rest when the swing supports make an angle of 23.3 with the vertical.
The acceleration of gravity is 9.81 m/s^2.
a) What is the maximum potential energy associated with the child?
Answer in units of J
b) Disregarding friction, find the child’s speed
at the lowest position.
Answer in units of m/s
c) What is the child’s total mechanical energy?
Answer in units of J
d) If the speed of the child at the lowest position is 0.986 m/s, what is the change in mechanical energy due to friction?
Answer in units of J
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