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An electric grinding wheel rotates for s...

An electric grinding wheel rotates for sometime after the power is turned off, but an electric drilling machine stops after few seconds of turning of fthe power.Why?

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PHYSICS GALAXY - ASHISH ARORA-RIGID BODIES AND ROTATIONAL MOTION-Discussion Question
  1. A body is in pure rolling on a surface. Is it necessarily being acted ...

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  2. Why it is more difficult to revolve a stone by tying it to a longer st...

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  3. A thin wheel can stay upright on its rim for a considerable length of ...

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  4. If two circular disks of the weight and thickness are made from metals...

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  5. A cylindrical container filled with cheese and another identical can f...

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  6. (i) A person sits near the edge of a circular platform revolving with ...

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  7. The harder you hit the brakes while driving forward, the more the fron...

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  8. A car's speedometer read the speed of car.Will there be a correction i...

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  9. When car is moving on a horizontal icy floor, if its brakes are locked...

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  10. A rear wheel drive car accelerates quickly from rest, and the driver o...

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  11. A disc rotates with constant angular velocity. Doesa point on its rim ...

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  12. A disc is fnst spinned and then placed gentlyon a rough floor with its...

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  13. A cylinder of mass M and radius R can rotate about its axis of symmet...

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  14. A disc of metal is melted and recast in the form of a soild sphere. Wh...

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  15. A wheel is rolling without slipping on a horizontal surface. In an ine...

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  16. If the atmosphere suddenly condensed into a solid mass and formed a th...

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  17. A point particle travels in a straight line at constant speed. The clo...

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  18. An electric grinding wheel rotates for sometime after the power is tur...

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  19. An electric grinding wheel rotates for sometime after the power is tur...

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  20. A student stands on a table rotating with an angular speed omega while...

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