Which of follows is right?
In order to do work:
(A) Force must act at any angle to the displacement
(B) force may not act along the same direction as is the displacement
(C) must act along the direction of displacements.
(D) must act normal to the direction of displacement
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I think the correct answer is option c............
clockkeeper:
nope!
don't make guesses
now i sure
force may act at any angle except 90* to the displacement
Ans is b
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