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In the arrangement shown, the 2 kg block...

In the arrangement shown, the 2 kg block is held to keep the system at rest. The string and pulley are ideal. When the 2kg block is set free, by what amount the tension in the string changes? `[g=10m//s^(2)]`

A

Increase of 12 N

B

Decrease of 12 N

C

Increase of 18 N

D

Decrease of 18 N

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The correct Answer is:
B
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ALLEN-NEWTON'S LAWS OF MOTION & FRICTION-EXERCISE (O-1)
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  2. In the given figure, Find mass of the block A, if it remains at rest, ...

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  3. In the arrangement shown, the 2 kg block is held to keep the system at...

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  4. A string of negligible mass going over a clamped pulley of mass m supp...

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  5. Block A is moving away from the wall at a speed v and acceleration a.

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  6. In the setup shown, fird acceleration of the block C.

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  7. A block of mass 2 kg is kept on a horizontal rough plane. If coefficie...

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  8. In the figure shown a ring of mass M and a block of mass m are in equi...

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  9. A force vecF=hati+4hatj acts on the block shown. The force of friction...

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  10. Block B of mass 100 kg rests on a rough surface of friction coeffcient...

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  11. A block of mass 3 kg is at rest on a rough inclined plane as shown in ...

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  12. A block of mass m=2kg is resting on a rough inclined plane of inclinat...

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  13. In the figure shown, if friction coefficient of block 1 kg and 2kg wit...

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  14. A block is pushed with some velocity up a rough inclined plane. It sto...

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  15. A system is pushed by a force F as shown in figure All surfaces are sm...

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  16. Refer the system shown in the figure. Block is siding down the wedge. ...

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  17. A block of mass 1 kg is held at rest against a rough vertical surface ...

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  18. A block is kept on a rough horizontal surface as shown. Its mass is 2 ...

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  19. The mass in the figure can slide on a frictionless surface. When the m...

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  20. A carpenter of mass 50 kg is standing on a weighing machine placed in ...

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