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A disc of mass m and radius R rotating w...

A disc of mass `m` and radius `R` rotating with angular speed `omega_(0)` is placed on a rough surface (co-officient of friction `=mu`). Then

A

The angular momentum of disc is conserved about centre of disc

B

The angular momentum of disc is conserved about point of contact of disc.

C

Initially the force of fricition acting on the disc is `mu mg` leftward.

D

Initally the force of friction acting on the disc is `mu mg` rightward

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AAKASH INSTITUTE ENGLISH-SYSTEM OF PARTICLES AND ROTATIONAL MOTION-Assignment (Section - C) Objective Type Questions (More than one option are correct)
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  7. A disc of mass M and radius R as shown in figure has some points on it...

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  8. A rod of mass m and length L is pivoted at the bottommost point O and ...

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  9. A rod of mass m and length L is pivoted at a point O and kept in horiz...

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  10. A horizontal rod of mass M and length L is tied to two verticle string...

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  14. A solid sphere of mass m and radius R is released from top of an incli...

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  16. A particle of mass m is moving with constant velocity v(0) along the l...

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  17. A disc of mass m and radius R rotating with angular speed omega(0) is ...

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  18. A block of mass m moves on a horizontal rough surface with initial vel...

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  19. A uniform rod of length l and mass 2 m rests on a smooth horizontal ta...

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  20. A disc of mass m and radius R is kept on a smooth horizontal surface w...

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