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When a sphere rolls down an inclined pla...

When a sphere rolls down an inclined plane, then identity the correct statement related to the work done by friction force.

A

the friction force does positive translational work

B

the friction force does negative rotational work

C

The net work done by friction is zero

D

all of the above

Text Solution

Verified by Experts

The correct Answer is:
C
In case of pure rolling on ground, net work done by friction `=0`
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DC PANDEY-ROTATIONAL MECHANICS-Level 1 Objective
  1. Moment of inertia of a thin semicircular disc (mass - M & radius = R) ...

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  2. Two bodies A and B made of same material have the moment of inertial i...

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  3. When a sphere rolls down an inclined plane, then identity the correct ...

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  4. A circular table rotates about a vertical axis with a constant angular...

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  5. If R is the radius of gyration of a body of mass M and radius r, then ...

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  6. A solid sphere rolls down two different inclined planes of the same he...

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  7. For the same total mass, which of the following will have the largest ...

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  8. A disc and a solid sphere of same mass and radius roll down an incline...

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  9. A horizontal disc rotates freely with angular velocity omega about a v...

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  10. A solid homogeneous sphere is moving on a rough horizontal surface, pa...

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  11. A particle of mass m=3kg moves along a straight line 4y-3x=2 where x a...

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  12. A solid sphere rolls without slipping on a rough horizontal floor, mov...

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  13. Ler l be the moment of inertia of a uniform square plate about an axi...

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  14. A spool is pulled horizontally on rough surface by two equal and oppos...

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  15. Two identical discs are positioned on a vertical axis as shown in the ...

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  16. The moment of inertia of hollow sphere (mass M) of inner radius R and ...

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  17. A rod of uniform cross-section of mass M and length L is hinged about ...

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  18. Let I(1) and I(2) be the moment of inertia of a uniform square plate a...

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  19. Moment of inertia of a uniform rod of length L and mass M, about an ax...

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  20. A uniform rod of legth L is free to rotate in a vertica plane about a ...

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