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A particle moves in a circular path with decreasing speed. Choose the correct statement.
(a)Angular momentum remains constant.
(b)Acceleration is towards the centre.
(c)Particle moves in a spiral path with decreasing radius.
(d)The direction of angular momentum remains constant.

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Important Questions on Circular Motion
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A body moves along a circular path with certain velocity. What will be the path of body in the following figure

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A particle comes round a circle of radius once. The time taken by it is . The average velocity of motion is

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The tangential velocity of a particle making rotations along a circle of radius in seconds is

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If of the particle of mass performing in a circle of radius is The acceleration of the particle is

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Assertion: If a body moving in a circular path has constant speed, then there is no force acting on it.
Reason: The direction of the velocity vector of a body moving in a circular path is changing.

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The centripetal acceleration is given by,

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Angle between radius vector and centripetal acceleration is

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For a particle in uniform circular motion, the acceleration at a point on the circle of radius is (Here is measured from the axis)
