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A thin wire of length l and mass m is be...

A thin wire of length l and mass m is bent in the form of a semicircle as shown in the figure. Its moment of inertia about an axis joining its free ends will be

A

`(ml^(2))/(2pi^(2))`

B

`(2pi^(2))/(ml^(2))`

C

`(ml^(2))/(pi^(2))`

D

`(pi^(2))/(ml^(2))`

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AAKASH INSTITUTE ENGLISH-SYSTEM OF PARTICLES AND ROTATIONAL MOTION-Assignment (Section - A) Objective Type Questions (One option is correct)
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  2. When a solid cylinder rolls without slipping the ratio of kinetic ener...

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  3. The torque required to stop a wheel having moment of inertia 5xx10^(-3...

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  4. The position vector of a point is (3hati-2hatj+6hatk)m. The i^(th) com...

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  5. A particle performing uniform circular motion gas angular momentum L. ...

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  6. A thin wire of length l and mass m is bent in the form of a semicircle...

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  7. A constant torque acting on a uniform circular wheel changes its angul...

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  8. Which of the following is correct ? (symbols have their ususal meaning...

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  9. A dancer on ice spins faster when she folds her arms due to

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  10. A solid sphere of radius r and mass m rotates about an axis passing th...

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  11. The moment of inertia of a solid cylinder of density rho, radius of ba...

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  12. A person sitting firmly over a rotating stool has his arms stretched. ...

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  13. Radius of gyration has the unit

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  14. A bomb at rest explodes. The centre of mass

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  15. If vecA*vecB=|vecAxxvecB|. Then angle between vecA and vecB is

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  16. Write SI unit of angular momentum:

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  17. If vecomega=2hati-3hatj+4hatk and vecr=2hati-3hatj+2hatk then the line...

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  18. The moment of inertia of a body does not depend on

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  19. A solid sphere, disc and solid cylinder all of the same mass and made ...

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  20. A body of mass m slides down an smooth incline and reaches the bottom ...

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