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A mass 1kg attached to the end of a flex...

A mass 1kg attached to the end of a flexible rope of diameter `d = 0.25 m`is raised vertically by winding the rope on a reel as shown. If the reel is turned uniformly at the rate of `2r.p.s.` What is the tension in rope. The inertia of rope may be neglected.

A

16.28 N

B

10 N

C

20 N

D

1 N

Text Solution

Verified by Experts

The correct Answer is:
A
Tangential acceleration `(dv)/(dt) = omega (dr)/(dt)`
`omega = 4 pi , (dr)/(dt) = 0.5 , a = 2 pi`
T - mg = ma , T = mg + ma
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GRB PUBLICATION-FRICTION AND CIRCULAR MOTION -OBJECTIVE QUESTIONS ( only one choice is correct )
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  3. A mass 1kg attached to the end of a flexible rope of diameter d = 0.25...

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  5. A particle is moving in a circle of radius R in such a way that at any...

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

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  7. A long horizontal rod has a bead which can slide along its length and ...

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  8. A particle 'P' is moving on a circular path under the action of only o...

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  9. In Fig. 7.149 , coefficient of friction between the block and the floo...

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  10. In Q.48 , the block can be made to slide on the floor only if theta is...

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  11. To avoid slipping while walking on ice, one should take smaller steps ...

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  12. A block of mass M slides down a rough inclined surface of inclination ...

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  13. In Fig. 7.150 , coefficient of friction between m(2) and the horizonta...

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  14. In Fig . 7.151 , coefficient of kinetic friction between the 4 kg bloc...

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  15. A uniform rope of length l lies on a table . If the coefficient of fri...

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  16. Two balls of masses m(1) and m(2) are separated from each other by a p...

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  17. The coefficient of static friction, mu(s) between block A of mass 2 k...

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  18. The minimum force required to start pushing a body up a rough (frictio...

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  19. A bar of mass m(1) is placed on a plank of mass m(2) which rests on a ...

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  20. In the given Fig. 7.154 , two masses 2 kg each are attached to a strin...

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