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♡define work done ♡degine positive and negative energy of work done |
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Answer» tion:-Work, in physics, measure of energy transfer that occurs when an object is moved over a DISTANCE by an external FORCE at least part of which is applied in the direction of the displacement. ... If the force is being exerted at an angle θ to the displacement, the work done is W = fd cos θ.Work can be EITHER positive or NEGATIVE: if the force has a component in the same direction as the displacement of the object, the force is doing positive work. ... If the force has a component in the direction opposite to the displacement, the force does negative work. |
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