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A body of mass 2 kg slides down with an ...

A body of mass 2 kg slides down with an acceleration of 3 `m//s^(2)` on a rough inclined plane having a slope of `30^(@)` The external force required to take the same body up the plane with the same acceleration will be : `(g=10 m//s^(2))`

A

14 N

B

20 N

C

6 N

D

4 N

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The correct Answer is:
B
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AAKASH SERIES-LAWS OF MOTION-EXERCISE - II
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  2. The minimum force required to move a body up an inclined plane is thre...

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  3. A body of mass 10kg is on a rough inclined plane having an inclination...

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  4. A block of wood of mass 0.5 kg is placed on a plane making 30° with th...

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  5. A body of mass 'm' slides down a smooth inclined plane having an incli...

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  6. A body is sliding down an inclined plane have coefficient of friction ...

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  7. A particle is placed at rest inside a hollow hemisphere of radius R. T...

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  8. A wooden box lying at rest on an inclined surface of a wet wood is hel...

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  9. Consider a frictionless ramp on which a smooth object is made to slide...

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  10. A body of mass 2 kg slides down with an acceleration of 3 m//s^(2) on ...

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  11. The centripetal force required by a 1000 kg car that takes a turn of r...

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  12. A stone of mass 0.5 kg is attached to a string of length 2 m and is wh...

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  13. A car is moving in a circular horizontal track of radius 10 m with a c...

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  14. Two point size bodies of same mass are knotted to a horizontal string ...

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  15. On one end of a string of length l is connected to a particle of mass ...

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  16. A solid sphere of radius 2.45m is rotating with an angular speed of 10...

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  17. A point object moves along an arc of a circle of radius 'R'. Its veloc...

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  19. The velocity vecv of a particle of mass 'm' acted upon by a constant f...

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  20. Two wedges, each of mass m, are placed next to each other on a flat ho...

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