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General
Easy
Question
A uniform circular disc placed on a rough horizontal surface has initially a velocity v0 and an angular velocity w0 as shown in the figure. The disc comes to rest after moving some distance in the direction of motion. Then
is

- 1
- 2
The correct answer is: 
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A disc of radius r is rotating about its centre with an angular speed
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A uniform rod is fixed to a rotating turntable so that its lower end is on the axis of the turntable and it makes an angle of 20° to the vertical. (The rod is thus rotating with uniform angular velocity about a vertical axis passing through one end.) If the turntable is rotating clockwise as seen from above.

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Is there a torque acting on it, and if so in what direction?
physics-General