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A lift is moving down with an accelerati...

A lift is moving down 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 frictional resistance offered by the body is .

A

mg

B

`mumg`

C

`2 mu mg`

D

Zero

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The correct Answer is:
D
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TARGET PUBLICATION-FRICTION IS SOLIDS AND LIQUIDS -MCQ (COMPETITIVE THINKING)
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  3. A lift is moving down with an acceleration equal to the acceleration d...

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  10. A system consists of three masses m(1),m(2) " and " m(3) connected by ...

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  11. Maximum value of static friction is .

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  12. Which of the following statements is incorrect ?

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  13. A body of mass M is kept n a rough horizontal surfasce (friction coeff...

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  14. Consider a frictionless ramp on which a smooth object is made to side ...

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  15. Block B lying on a table weighs w. The coefficient of static friction ...

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  16. A heavy uniform chain lies on a horizontal table-top. If the coefficie...

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  17. A block A with mass 100kg is resting on another block B of mass 200kg....

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  18. A block of mass 2kg is kept on the floor. The coefficient of static fr...

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  19. Given in figure are two blocks A and B of weight 20N and 100N, respect...

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  20. A block of mass m is lying on horizontal surface of coefficient of fri...

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