No-work-is-done-by-a-force-on-an-object-if-1-the-object-is-stationary-but-the-point-of-application-of-the-force-moves-on-the-object-2-the-object-moves-in-such-a-way-that-the-point-of-application-o

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Question Number 23585 by Tinkutara last updated on 02/Nov/17

$$\mathrm{No}\mathrm{work}\mathrm{is}\mathrm{done}\mathrm{by}\mathrm{a}\mathrm{force}\mathrm{on}\mathrm{an}\mathrm{object}\mathrm{if}$$$$\left(1\right)\mathrm{the}\mathrm{object}\mathrm{is}\mathrm{stationary}\mathrm{but}\mathrm{the}$$$$\mathrm{point}\mathrm{of}\mathrm{application}\mathrm{of}\mathrm{the}\mathrm{force}\mathrm{moves}$$$$\mathrm{on}\mathrm{the}\mathrm{object}$$$$\left(2\right)\mathrm{the}\mathrm{object}\mathrm{moves}\mathrm{in}\mathrm{such}\mathrm{a}\mathrm{way}$$$$\mathrm{that}\mathrm{the}\mathrm{point}\mathrm{of}\mathrm{application}\mathrm{of}\mathrm{the}$$$$\mathrm{force}\mathrm{remains}\mathrm{fixed}$$$$\left(3\right)\mathrm{the}\mathrm{force}\mathrm{is}\mathrm{always}\mathrm{perpendicular}\mathrm{to}$$$$\mathrm{its}\mathrm{velocity}$$$$\left(4\right)\mathrm{the}\mathrm{force}\mathrm{is}\mathrm{always}\mathrm{perpendicular}\mathrm{to}$$$$\mathrm{its}\mathrm{acceleration}.$$

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