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A child weighing 25 kg slides down a rop...

A child weighing 25 kg slides down a rope hanging from a branch of a tall tree. If the force of friction acting against him is 200 N, the acceleration of child is `(g=10 m//s^(2))`

A

`22.5 m//s^(2)`

B

`8 m//s^(2)`

C

`5m//s^(2)`

D

`2m//s^(2)`

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AAKASH INSTITUTE-LAWS OF MOTION-Assignment (SECTION-A)
  1. Which is a suitable method to decrease friction

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  2. A cubical block rests on a plane of mu= sqrt(3) . The angle through wh...

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  3. A block of mass 1 kg is projected from the lowest point up along the i...

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  4. A child weighing 25 kg slides down a rope hanging from a branch of a t...

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  5. An object of mass 1 kg moving on a horizontal surface with initial ve...

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  6. A heavy box is slid across a rough floor with an initial speed of 4 m/...

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  7. If a block moving up an inclined plane at 30^(@) with a velocity of 5 ...

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  8. A chain is lying on a rough table with a fraction 1/n of its length ha...

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  9. A block has been placed on an inclined plane with the slope angle thet...

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  10. A horizontal force of 10N is necessary to just hold a block stationary...

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  11. In the figure shown, the coefficient of static friction between the bl...

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  16. A car is moving on a horizontal circular track of radius 0.2 km with a...

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  17. A boy is sitting on the horizontal platform of a joy wheel at a distan...

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  18. A vehicle is moving on a track with constant speed as shown in figure....

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  19. A train is running at 20 m/s on a railway line with radius of curvatur...

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  20. A car is moving on a horizontal circular road of radius 0.1 km with co...

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