A 44.0 kg child is in a swing that is attached to ropes 2.20 m long. The acceleration of gravity is 9.81 m/s2. Find the gravitational potential energy as- sociated with the child relative to the child's lowest position under the following condi- tions: a) when the ropes are horizontal. Answer in units of J.



Answer :

Answer:

a) 949 J

Explanation:

The gravitational potential energy is equal to the weight times the height. When the ropes are horizontal, the height of the child is equal to the length of the ropes.

PE = mgh

PE = (44.0 kg) (9.81 m/s²) (2.20 m)

PE = 949 J

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