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the obj weighs 100 N and it is traveling upwards at constant velocity of 5m/s. whats the power required to keep it in motion. Ignore air resistance.
I said power is 0 watts because if velocity is constant, a=0, meaning F=0. And if F=0 then P=Fv=0.
Answer is P=Fv=100nx5m/s=500W
i dont get it...I mean...100N is the objects weight not the thing thats applying force
conversely, the followup question says the same object same speed moves horizontally this time...now the answer is 0.
i dont get it
I said power is 0 watts because if velocity is constant, a=0, meaning F=0. And if F=0 then P=Fv=0.
Answer is P=Fv=100nx5m/s=500W
i dont get it...I mean...100N is the objects weight not the thing thats applying force
conversely, the followup question says the same object same speed moves horizontally this time...now the answer is 0.
i dont get it
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