A girl hangs by her hands from a bar in the gymnasium. She pulls herself up until her chin is level with the bar. The mass of the girl is 48 kg. She pulls herself up through a distance of 0.25 m. She does this in 2.0s. What is the useful power she uses to pull herself up?
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2
Explanation:
Every force acting on the parachutist is equal to zero and his acceleration is equal to zero.
Every force acting on the parachutist is equal to zero and his velocity is equal to zero.
The resultant force acting on the parachutist is equal to zero and his acceleration is equal to zero.
The resultant force acting on the parachutist is equal to zero and his velocity is equal to zero
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1
Answer: 60
Explanation:
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