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Question:

How to set up this question using Work-Energy Principle?

How to set up this question using Work-Energy Principle?

Answer:

not sure this can be donehow long is the pendulum what angle is formed by a 4 m displacementwhat is the vertical displacement for the 4 m horizontal? Relation of work-energy Kenetic energy, work force x distance potential mgh I cannot see a definate relationship could the problem be 4 meter above horizontal?

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