calculate the work done by a 47 N force pushing a 0.025 pencil 0.25m against a force of 23 N
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W= Force × Distance through which force moves
W = 47 × 0.25 = 11.75J
the Net force used for pushing the pencil = 47 − 23 = 24 N
W u = Force × Distance
⇒ W u = 24 × 0.25 = 6 J
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