# Rotational Motion · Physics · COMEDK

Start Practice## MCQ (Single Correct Answer)

COMEDK 2024 Evening Shift

A solid cylinder of mass $$2 \mathrm{~kg}$$ and radius $$0.2 \mathrm{~m}$$ is rotating about its own axis without friction with angular velocity $$5 \...

COMEDK 2024 Evening Shift

Joule second is the unit of

COMEDK 2024 Morning Shift

A body of mass $$5 \mathrm{~kg}$$ at rest is rotated for $$25 \mathrm{~s}$$ with a constant moment of force $$10 \mathrm{~Nm}$$. Find the work done if...

COMEDK 2023 Morning Shift

A thin circular ring of mass ,$$M$$ and radius $$R$$ rotates about an axis through its centre and perpendicular to its plane, with a constant angular ...

COMEDK 2023 Evening Shift

A wheel is free to rotate about a horizontal axis through O. A force of $$200 \mathrm{~N}$$ is applied at a point $$\mathrm{P} 2 \mathrm{~cm}$$ from t...

COMEDK 2022

A disc of moment of inertia 4 kg - m$$^2$$ revolving with 16 rad/s is placed on another disc of moment of inertia 8 kg - m$$^2$$ revolving 4 rad/s. Th...

COMEDK 2021

Newton's second law of rotational motion of a system particles having angular momentum L is given by

COMEDK 2020

Four particles each of the mass m are placed at
the corners of a square of side length $$l$$. The
radius of gyration of the system about an axis
perpe...

COMEDK 2020

The masses of 200 g and 300 g are attached to
the 20 cm and 70 cm marks of a light meter rod,
respectively. The moment of inertia of the
system about ...