AIEEE 2007 | Rotational Motion Question 195 | Physics

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

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

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

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

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

AIEEE 2006

MCQ (Single Correct Answer)

-1

Four point masses, each of value $$m,$$ are placed at the corners of a square $$ABCD$$ of side $$l$$. The moment of inertia of this system about an axis passing through $$A$$ and parallel to $$BD$$ is

$$2m{l^2}$$

$$\sqrt 3 m{l^2}$$

$$3m{l^2}$$

$$m{l^2}$$

AIEEE 2006

MCQ (Single Correct Answer)

-1

A force of $$ - F\widehat k$$ acts on $$O,$$ the origin of the coordinate system. The torque about the point $$(1, -1)$$ is AIEEE 2006 Physics - Rotational Motion Question 186 English