A dancer on ice spins faster when she fo...

A dancer on ice spins faster when she folds her arms due to

Decrease in friction

Constant angular momentum

Decrease in angular momentum and decrease in kinetic energy

Increase in angular momentum and increase in kinetic energy

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AAKASH INSTITUTE ENGLISH-SYSTEM OF PARTICLES AND ROTATIONAL MOTION-Assignment (Section - A) Objective Type Questions (One option is correct)

The angular velocity of a body is vecomega=3hati+5hatj+6hatk("radian"/...
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When a solid cylinder rolls without slipping the ratio of kinetic ener...
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The torque required to stop a wheel having moment of inertia 5xx10^(-3...
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The position vector of a point is (3hati-2hatj+6hatk)m. The i^(th) com...
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A particle performing uniform circular motion gas angular momentum L. ...
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A thin wire of length l and mass m is bent in the form of a semicircle...
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A constant torque acting on a uniform circular wheel changes its angul...
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Which of the following is correct ? (symbols have their ususal meaning...
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A dancer on ice spins faster when she folds her arms due to
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A solid sphere of radius r and mass m rotates about an axis passing th...
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The moment of inertia of a solid cylinder of density rho, radius of ba...
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A person sitting firmly over a rotating stool has his arms stretched. ...
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Radius of gyration has the unit
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A bomb at rest explodes. The centre of mass
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If vecA*vecB=|vecAxxvecB|. Then angle between vecA and vecB is
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Write SI unit of angular momentum:
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If vecomega=2hati-3hatj+4hatk and vecr=2hati-3hatj+2hatk then the line...
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The moment of inertia of a body does not depend on
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A solid sphere, disc and solid cylinder all of the same mass and made ...
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A body of mass m slides down an smooth incline and reaches the bottom ...
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