Question

determine the minimum necessary upward force that must be applied to lift a 15 kg object to a height of 5 m at constant speed calculate also corresponding work done for this applied force

please explain​

Answer 1

Answer:

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.

Explanation:

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