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1. |
A lift is moving downwards with an acceleration equal to the acceleration due to gravity. A body of mass M kept on the floor of the lift is pulled horizontally. If the coefficient of friction is \[\mu \], then the friction resistance offered by the body is |
A. | \[Mg\] |
B. | \[\mu Mg\] |
C. | \[2\mu Mg\] |
D. | zero |
Answer» E. | |