nadams11
Answered

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4. If it requires 19,208 J to lift an object in 10s, how much power is needed?

Sagot :

Answer:

1920.8

Explanation:

If the object is lifted straight up at constant speed, then the force needed to lift it is equal to its weight mg. The work done on the mass is then W = Fd = mgh. We define this to be the gravitational potential energy (PEg) put into (or gained by) the object-Earth system

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