AIPMT 2005 | Rotational Motion Question 70 | Physics

AIPMT 2005

MCQ (Single Correct Answer)

-1

A drum of radius R and mass M, rolls down without slipping along an inclined plane of angle $$\theta $$. The frictional force

dissipates energy as heat

decreases the rotational motion

decreases the rotational and translation motion

converts translational energy to rotational energy.

AIPMT 2005

MCQ (Single Correct Answer)

-1

The moment of inertia of a uniform circular disc of radius R and mass M about an axis passing from the edge of the disc and normal to the disc is

MR²

$${1 \over 2}$$ MR²

$${3 \over 2}$$ MR²

$${7 \over 2}$$ MR²

AIPMT 2004

MCQ (Single Correct Answer)

-1

The ratio of the radii of gyration of a circular disc about a tangential axis in the plane of the disc and of a circular ring of the same radius about a tangential axes in the plane of the ring is

2 : 3

2 : 1

$$\sqrt 5 :\sqrt 6 $$

$$1:\sqrt 2 $$

AIPMT 2004

MCQ (Single Correct Answer)

-1

A round disc of moment of inertia $$I$$₂ about its axis perpendicular to its plane and passing through its centre is placed over another disc of moment of inertia $$I$$₁ rotating with an angular velocity $$\omega $$ about the same axis. The final angular velocity of the combination of discs is

$${{{I_2}\omega } \over {{I_1} + {I_2}}}$$

$$\omega $$

$${{{I_1}\omega } \over {{I_1} + I{}_2}}$$

$${{\left( {{I_1} + {I_2}} \right)\omega } \over {{I_1}}}$$

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