JEE Main 2021 (Online) 22th July Evening Shift | Rotational Motion Question 40 | Physics

JEE Main 2021 (Online) 22th July Evening Shift

MCQ (Single Correct Answer)

-1

Consider a situation in which a ring, a solid cylinder and a solid sphere roll down on the same inclined plane without slipping. Assume that they start rolling from rest and having identical diameter.

The correct statement for this situation is

All of them will have same velocity.

The ring has greatest and the cylinder has the least velocity of the centre of mass at the bottom of the inclined plane.

The sphere has the greatest and the ring has the least velocity of the centre of mass at the bottom of the inclined plane.

The cylinder has the greatest and the sphere has the least velocity of the centre of mass at the bottom of the inclined plane.

JEE Main 2021 (Online) 20th July Evening Shift

MCQ (Single Correct Answer)

-1

A body rolls down an inclined plane without slipping. The kinetic energy of rotation is 50% of its translational kinetic energy. The body is :

Solid sphere

Solid cylinder

Hollow cylinder

Ring

JEE Main 2021 (Online) 18th March Evening Shift

MCQ (Single Correct Answer)

-1

A particle of mass m moves in a circular orbit under the central potential field, $$U(r) = - {C \over r}$$, where C is a positive constant. The correct radius $$-$$ velocity graph of the particle's motion is :

JEE Main 2021 (Online) 18th March Evening Shift Physics - Rotational Motion Question 47 English Option 1

JEE Main 2021 (Online) 18th March Evening Shift Physics - Rotational Motion Question 47 English Option 2

JEE Main 2021 (Online) 18th March Evening Shift

MCQ (Single Correct Answer)

-1

Consider a uniform wire of mass M and length L. It is bent into a semicircle. Its moment of inertia about a line perpendicular to the plane of the wire passing through the center is :

$${1 \over 4}{{M{L^2}} \over {{\pi ^2}}}$$

$${1 \over 2}{{M{L^2}} \over {{\pi ^2}}}$$

$${2 \over 5}{{M{L^2}} \over {{\pi ^2}}}$$

$${{M{L^2}} \over {{\pi ^2}}}$$

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