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Two blocks of masses 2.9 kg and 1.9 kg a...

Two blocks of masses 2.9 kg and 1.9 kg are suspended from a rigid support S by two inextensible wires each of length 1 m. The upper wire has negligible mass and the lower wire has a uniform mass of 0.2 kg/m. Thewhole system of block, wire and support have an upward acceleration of 0.2 m/s2. g = 9.8 m/s2. The tension at the mid-point of lower wire is-

A

10N

B

20N

C

30N

D

50N

Text Solution

Verified by Experts

The correct Answer is:
B
`T_(B)=(1.9+0.1)xx10=20N`
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ALLEN-NEWTONS LAWS OF MOTION-EXERCISE-II
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  2. Two blocks each having a mass M are placed as shown in the figure. The...

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  3. Two blocks of masses 2.9 kg and 1.9 kg are suspended from a rigid supp...

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  4. The pulleys and strings shown in fig are smooth and of negligible mass...

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  5. A metal sphere is a string fixed to a wall. The forces acting on the s...

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  6. An object of mass 10kg moves at a constant speed of 10 ms^(-1). A cons...

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  7. The ratio of the weight of a man in a stationary lift and when it is m...

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  8. A body of mass 40g is moving with a constant velocity 2cm/s on a horiz...

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  9. The velocity acquired by a mass m in travelling a certain distance d s...

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  10. A cork and a metal bob are connected by a string as shown in the figur...

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  11. A body kept on a smooth inclined plane inclination 1 in x will remain ...

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  12. A pulley is attached to the celing of a lift moing upwards. Two partic...

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  13. Two masses of 1 kg and 5 kg are attached to the ends of a massless str...

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  14. A player catches a ball of 200 gm moving with a speed of 20 m/s. if th...

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  15. A frame will be inertial, if it moves with respect to another inertial...

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  16. Two masses 10 kg and 20 kg respectively are connected by a massless sp...

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  17. The pulley arrangements shown in figure are identical, the mass of the...

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  18. What is the mechanical advantage of single fixed pulley:-

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  19. Three masses of 1 kg, 6 kg and 3 kg are connected to each other with t...

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  20. A balloons of mass M is descending at a constant acceleration alpha. W...

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