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Two persons are holding a rope of neglig...

Two persons are holding a rope of negligible weight tightly at its ends so that is horizontal. A 15kg weight is attached to the mid point which how no longer remains horizontal. The minimum tension required to completely straighten the rope is:

A

15kg

B

15/2 kg

C

5 kg

D

Infinitely large

Text Solution

Verified by Experts

The correct Answer is:
D
Horizontal force can not balance vertical forces.
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ALLEN -NEWTONS LAWS OF MOTION-EXERCISE-II
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  2. Two blocks of masses 2 kg and 1 kg are in contact with each other on a...

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  3. Two persons are holding a rope of negligible weight tightly at its end...

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  4. A boy of mass 40 kg is hanging from the horizontal branch of a tree. T...

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  5. A chain of mass M and length L is held vertical by fixing its upper en...

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  6. Find the tension T(2) in the system shown in fig.

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  7. Three blocks are connected as shown in fig. on a horizontal frictionle...

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  8. In the fig. given masses m and m' are tied with a tread passing over a...

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  9. Two bodies of masses 5 kg and 4 kg are arranged in two possition as sh...

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  10. Three equal weights of mass 2 kg each are hanging on a string passing ...

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  11. Two blocks each of mass M are resting on a frictionless inclined plane...

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  12. A small sphere is suspended by a string from the ceiling of a car. If ...

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  13. A pendulum is suspended from the roof of a rall road car. When the car...

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  14. Drums of oil are carried in a truck. If a constant accleration is appl...

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  15. A boy sitting on the top most berth in the compartment of a train whic...

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  16. A ball weighing 10g hits a hard surface vertically with a speed of 5m/...

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  17. A force-time graph for the motion of a body is shown in fig. change in...

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  18. Newton's II law of motion connects:

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  19. The distance x covered in time t by a body having initial velocity v(0...

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  20. Working of rocket or jet is based on:-

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