A ball of mass 0.3 kg thrown upwards reaches a maximum height of 5 m. Calculate the work done by the force of gravity during this vertical displacement considering the value of g = 10 `m//s^(2)`.
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Force of gravity acting on the ball, F = mg = 0.5 `times` 10 = 5 N displacement of the ball, s = 5 m The force and displacement are in opposite directions. Hence work done by the force of gravity on the ball is negative. W = -Fs = -5 `times` 5 = - 25 J
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