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A horizontal platform is rotating with u...

A horizontal platform is rotating with uniform angular velcity around the vertical axis passing through its centre. At some instant of time a viscous fluid of mass `m` is dropped at the centre and is allowed to spread out and finally fall. The angular velocity during this period :

A

decreases continuosly

B

decreases initially and increases again

C

remains unaltered

D

increases continously

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The correct Answer is:
A
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MOTION-ROTATIONAL MOTION -Exercise - 3 ( Section-A )
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  2. A solid sphere is rolling on a frictionless surface, shown in figure w...

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  3. A horizontal platform is rotating with uniform angular velcity around ...

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  4. The moment of inertia of a uniform circular disc of radius R and mass ...

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  5. The moment of inertia of a rod about an axis through its centre and pe...

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  6. A particle of mass m moves in the XY plane with a velocity v along the...

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  7. A uniform rod AB of length l and mass m is free to rotate abou...

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  8. Three rings, each of mass P and radius Q are arranged as shown in the ...

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  9. For the given uniform square lamina ABCD, whose centre is O

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  10. A thin rod of length L and mass M is bent at its midpoint into two hal...

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  11. The ratio of the radii of gyration of a circular disc to that of a cir...

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  12. Assertion: The velocity of a body at the bottom of an inclind plane of...

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  13. Four identical thin rods each of mass M and length l3, form a square f...

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  14. A thin circular ring of mass M and radius R is rotating in a horizonta...

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  15. If is the force acting on a particle having position vector and be the...

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  16. A circular disc of moment of inertia I(t) is rotating in a horizontal...

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  17. A thin circular ring of mass m and radius R is rotating about its axis...

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  18. From a circular disc of radius R and mass 9 M , a small disc of radius...

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  19. A solid cylinder and a hollow cylinder, both of the same mass and same...

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  20. The moment of inertia of a thin uniform rod of mass M and length L abo...

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