An athlete is running at a constant velocity with a javelin held in his right hand. The force he is applying on the javelin as he carries it is 5.0 newtons. If he covers a distance of 10 meters, what work has he done on the javelin?
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The force on carrying the javelin is in downward direction, as he is running perpendicular to it, so the force's component will be Fcos90 to his running direction.
As, cos90=0
Thus Fcos90 = 0.
Hence workdone = Fcos90 × travelled distance = 0. So no workdone has been done here.
As, cos90=0
Thus Fcos90 = 0.
Hence workdone = Fcos90 × travelled distance = 0. So no workdone has been done here.
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