work done.
(H.P.S.S.C.E. 2000)|Ans. - 15 JI
A body is constrained to move along the Y-axis of a
coordinate system is subjected to a constant
force F = (2î +3ġ- Â)N. What is the work done by the
force in moving the body a distance of 2 m along the Y-axis.
(H.P.S.S.C.E. 2007) [Ans. 6 J]
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Answer:
work done=force×displacement
as also the direction is mentioned so we have to calculate a vector quantity.
in vector form i^.i^= 1 and i^×j^=0 similarly with all components therefore..,
work=3×2=6 N/m Or J.
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