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A wheel of radius 20 cm is pushed ot mov...

A wheel of radius 20 cm is pushed ot move it on a rough horizontal surface. It is found to move through a distance of 60 cm on the road during the time it completes one revolutionabout the centre. Assume that the linear and the angular accelerations are uniform. The frictional force acting on the wheel by the surface is

A

along the velocity of the wheel

B

opposite to the velocity o the wheel

C

perpendicular to the velocity of the wheel

D

zero

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The correct Answer is:
A
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HC VERMA-ROTATIONAL MECHANICS-Objective -1
  1. A body is rotating uniformly about a vertical axis fixed in an inertia...

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  2. If F is the force acting on a particle having position vector vec r an...

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  3. One end of a uniform rod of mas m and length l is clamped. The rod lie...

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  4. A uniform rod is kept vertically on a horizontally smooth surface at ...

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  5. A circular disc A of radius r is made from an iron plate of thickness ...

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  6. Equal torques asct on the discs A and B of theh previous problem, init...

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  7. A closed tube partly filled with water lies is a horizontal plane. If ...

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  8. The moment of inertia of a uniform semi-circular wire of mass 'M' and ...

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  9. Let I1 and I2 be the moments of inertia of two bodies of identical ge...

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  10. A body having its centre of mass at the origin has three of its partic...

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  11. A cubical block of mass M and edge a slides down a rougg inclined plan...

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  12. A thin circular ring of mass M and radius r is rotating about its axis...

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  13. A man is sitting on a rotating stool with his arms outstretched. If su...

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  14. The center of a wheel rolling on a plane surface moves with a speed v0...

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  15. A wheel of radius 20 cm is pushed ot move it on a rough horizontal sur...

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  16. The angular velocity of the engine (and hence of the wheel) on a scoot...

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  17. A solid sphere, a hollow sphere and a disc, all having the same mass a...

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  18. A solid sphere, a ring and a disc all having same mass and radius are ...

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  19. In the previous question the smallest kinetic energy at the bottom of ...

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  20. A string of negligible thicknes is wrapped several times around a cyli...

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