AIEEE 2003 | Rotational Motion Question 205 | Physics

A circular disc $$X$$ of radius $$R$$ is made from an iron plate of thickness $$t,$$ and another disc $$Y$$ of radius $$4$$ $$R$$ is made from an iron plate of thickness $${t \over 4}.$$ Then the relation between the moment of inertia $${I_X}$$ and $${I_Y}$$ is

$${I_Y} = 32{I_X}$$

$${I_Y} = 16{I_X}$$

$${I_Y} = {I_X}$$

$${I_Y} = 64{I_X}$$

AIEEE 2002

MCQ (Single Correct Answer)

-1

Initial angular velocity of a circular disc of mass $$M$$ is $${\omega _1}.$$ Then two small spheres of mass $$m$$ are attached gently to diametrically opposite points on the edge of the disc. What is the final angular velocity of the disc?

$$\left( {{{M + m} \over M}} \right)\,\,{\omega _1}$$

$$\left( {{{M + m} \over m}} \right)\,\,{\omega _1}$$

$$\left( {{M \over {M + 4m}}} \right)\,\,{\omega _1}$$

$$\left( {{M \over {M + 2m}}} \right)\,\,{\omega _1}$$

AIEEE 2002

MCQ (Single Correct Answer)

-1

Moment of inertia of a circular wire of mass $$M$$ and radius $$R$$ about its diameter is

$${{M{R^2}} \over 2}$$

$$M{R^2}$$

$$2M{R^2}$$

$${{M{R^2}} \over 4}$$

AIEEE 2002

MCQ (Single Correct Answer)

-1

A particle of mass $$m$$ moves along line PC with velocity $$v$$ as shown. What is the angular momentum of the particle about P? AIEEE 2002 Physics - Rotational Motion Question 207 English