AIPMT 2010 Mains | Rotational Motion Question 50 | Physics

AIPMT 2010 Mains

MCQ (Single Correct Answer)

-1

A thin circular ring of mass M and radius r is rotating about its axis with constant angular velocity $$\omega $$. Two objects each of msass m are attached gently to the opposite ends of a diameter of the ring. The ring now rotates with angular velocity given by

$${{\left( {M + 2m} \right)\omega } \over {2m}}$$

$${{2M\omega } \over {M + 2m}}$$

$${{\left( {M + 2m} \right)\omega } \over M}$$

$${{M\omega } \over {M + 2m}}$$

AIPMT 2010 Mains

MCQ (Single Correct Answer)

-1

A solid cylinder and a hollow cylinder, both of the same mass and same external diameter are released from the same height at the same time on an inclined plane. Both roll down without slipping. Which one will reach the bottom first?

Both together only when angle of inclination of plane is 45^o

Both together

Hollow cylinder

Solid cylinder

AIPMT 2010 Mains

MCQ (Single Correct Answer)

-1

From a circular disc of radius R and mass 9M, a small disc of mass M and radius $${R \over 3}$$ is removed concentrically. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through its centre is

$${{40} \over 9}$$ MR²

MR²

4MR²

$${4 \over 9}$$ MR²

AIPMT 2010 Prelims

MCQ (Single Correct Answer)

-1

A gramophone record is revolving with an angular velocity $$\omega $$. A coin is placed at a distance r from the centre of the record. The static coefficient of friction is $$\mu $$. The coin will revolve with the record if

r = $$\mu $$g$$\omega $$²

r < $${{{\omega ^2}} \over {\mu g}}$$

$$r \le {{\mu g} \over {{\omega ^2}}}$$

$$r \ge {{\mu g} \over {{\omega ^2}}}$$

PREVIOUS NEXT

NEET Subjects

Biology

Botany

Zoology

Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution