A 350 N child is in a swing attached to rope 1.75m long. Find the gravitational PE associated with the child relative to her lowest position when the ropes make a 30 degree angle with the vertical

Answer 1

Gravitational potential energy is given by mgh
where h=difference in elevation
m=mass

For the given case,
radius,r =1.75m
θ=30°
h=r(1-cos(θ))

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