A man is sitting on a rotating stool wit...

A man is sitting on a rotating stool with his arms outstretched. If suddenly he folds his arms the angular velocity of the man would

increases

decreases

remains unchanged

doubles

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HC VERMA-ROTATIONAL MECHANICS-Objective -1

A body is rotating uniformly about a vertical axis fixed in an inertia...
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If F is the force acting on a particle having position vector vec r an...
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One end of a uniform rod of mas m and length l is clamped. The rod lie...
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A uniform rod is kept vertically on a horizontally smooth surface at ...
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A circular disc A of radius r is made from an iron plate of thickness ...
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Equal torques asct on the discs A and B of theh previous problem, init...
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A closed tube partly filled with water lies is a horizontal plane. If ...
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The moment of inertia of a uniform semi-circular wire of mass 'M' and ...
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Let I1 and I2 be the moments of inertia of two bodies of identical ge...
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A body having its centre of mass at the origin has three of its partic...
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A cubical block of mass M and edge a slides down a rougg inclined plan...
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A thin circular ring of mass M and radius r is rotating about its axis...
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A man is sitting on a rotating stool with his arms outstretched. If su...
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The center of a wheel rolling on a plane surface moves with a speed v0...
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A wheel of radius 20 cm is pushed ot move it on a rough horizontal sur...
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The angular velocity of the engine (and hence of the wheel) on a scoot...
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A solid sphere, a hollow sphere and a disc, all having the same mass a...
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A solid sphere, a ring and a disc all having same mass and radius are ...
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In the previous question the smallest kinetic energy at the bottom of ...
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A string of negligible thicknes is wrapped several times around a cyli...
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