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The force exerted by the lift on the foot of a person standing in it, is more then his weight then the lift is- (a) going up and slowing down , (b) going up and speeding up (c ) going down and slowing down , (d) going down and speeding upA. a,cB. b,cC. a,dD. b,d |
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Answer» in upward acceleration or downward deceleration N=mg +ma Ngt mg in downward acceleration or upward deceleration N=mg =ma Nlt mg |
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