In which of the following cases the applied external force will be maximum? a) force applied to start the movement of an object. b) force applied to keep the moving object at a constant speed. c) force applied when the object moves on rollers. d) same in all the above cases.
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option a is correct.
Because to start the movement of object , we need to apply more force to overcome static friction.
Because to start the movement of object , we need to apply more force to overcome static friction.
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