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Q.

A body constrained to move in Y direction, is subjected to a force given by F→=(−2i^+15j^+6k^)N . What is the work done by this force in moving the body through a distance of 10m along Y axis?

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a

190 J

b

160 J

c

150 J

d

20 J

answer is C.

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Detailed Solution

Since displacement is along the Y direction, hence displacement s→=10j^ Work done =F→.s→ =(−2i^+15j^+6k^).10j^=150 J

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