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A symmetrical body rotating about its axis of symmetry has moment of inertia 1 kg –m2 and rate of rotation is 8 rev/sec. The kinetic energy of rotation will be

Consider a uniform solid cylinder of radius 0.01m and mass 100 kg wrapped several times with a rope. Pivoted so it can rotate about its axis. The angular acceleration when the rope is pulled with a force of 50 N, is

8 red s-2

16 red s-2

40 red s-2

100 red s-2

The acceleration of a ring with its M.I. lying about the axis passing through its center and perpendicular to its plane (axis of rotation) rolling down an inclined plane at an angle is

The path of the center of mass of an Indian club (Mugdar) always follows the ________ when thrown vertically upwards.

Hyperbolic path

Parabolic path

Circular path

Zig-zag path

When the resultant external torque on a system is zero, the angular momentum of the system

Decreases

Increases

Remains constant

None of the above

A skater, performing a performing a pirouette on the toe of one skate, takes the advantage of

Conservation of momentum

Conservation of angular momentum

Energy conservation

Conservation of kinetic energy

In pure rotation, the center of mass of the rotating body has

Linear velocity

Non-uniform velocity

Zero linear velocity

Maximum velocity

If a cracker explodes in mid air into many fiery pieces, the center of mass of all the fragments of the cracker continuously moves along the

Parabolic path in initial direction

Hyperbolic path

Different path

Parabolic but not in initial direction

A rotating thin wheel can stay upright on its rim for a long time, however, when a thin wheel is stationary, it falls from its vertical position on a small disturbance, because the wheel is in

Non-vertical equilibrium

Stable equilibrium

Unstable equilibrium

None of the above

When a spin is given at the same time to both a hard boiled egg and a raw egg, the torque applied in both the cases is the same, then the angular acceleration of

Hard egg will be less

Both the egg will be the same

Raw egg will be less

Raw egg will be zero

Consider a uniform solid cylinder of radius 0.01m and mass 100 kg wrapped several times with a rope. Pivoted so it can rotate about its axis. The angular acceleration when the rope is pulled with a force of 50 N, is

8 red s-2

16 red s-2

40 red s-2

100 red s-2

The acceleration of a ring with its M.I. lying about the axis passing through its center and perpendicular to its plane (axis of rotation) rolling down an inclined plane at an angle is

The path of the center of mass of an Indian club (Mugdar) always follows the ________ when thrown vertically upwards.

Hyperbolic path

Parabolic path

Circular path

Zig-zag path

When the resultant external torque on a system is zero, the angular momentum of the system

Decreases

Increases

Remains constant

None of the above

A skater, performing a performing a pirouette on the toe of one skate, takes the advantage of

Conservation of momentum

Conservation of angular momentum

Energy conservation

Conservation of kinetic energy

In pure rotation, the center of mass of the rotating body has

Linear velocity

Non-uniform velocity

Zero linear velocity

Maximum velocity

If a cracker explodes in mid air into many fiery pieces, the center of mass of all the fragments of the cracker continuously moves along the

Parabolic path in initial direction

Hyperbolic path

Different path

Parabolic but not in initial direction

A rotating thin wheel can stay upright on its rim for a long time, however, when a thin wheel is stationary, it falls from its vertical position on a small disturbance, because the wheel is in

Non-vertical equilibrium

Stable equilibrium

Unstable equilibrium

None of the above

When a spin is given at the same time to both a hard boiled egg and a raw egg, the torque applied in both the cases is the same, then the angular acceleration of

Hard egg will be less

Both the egg will be the same

Raw egg will be less

Raw egg will be zero

Questions are on motion of centre of mass, conservation of angular momentum mainly

AIEEE Physics: Rotational motion IIT JEE Physics XI CBSE I.SC AIPMT Physics: Rotational Motion Rotational Motion

thanx for all great effors and i like to contact with u more and more to know more of ur great exams

mnoor124@hotmail.com

am teacher of physics too we can cooporate more

waiting to read from u

regards

4088 days 12 hours 22 minutes ago

Thanks for your comments. It was very nice of you to give the positive commnts. I have sent a reply to your mail ID.

4088 days 44 minutes ago

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