Rotational Motion PYQs - Last 5 Years
COMEDK / Physics / Mechanics / 15 recent questions
PhysicsMechanics2022-2026
Practice 15 COMEDK Physics questions from Rotational Motion. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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Physics / Mechanics
2022-2026
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Last 5 Years Rotational Motion Questions
Showing 15 of 15 filtered questions.
1Rotational Motion
Four masses each 2 kg are placed at the corners A, B, C, D of a mass less square frame. 40 kg mass is at the centre O of a square frame of side 0.2 m . It is to be rotated about an axis passing through the centre O and perpendicular to the ...
MCQ+1 / -02026
2Rotational Motion
A particle starts rotating from rest. The instantaneous angular displacement is $\theta=3 t^3-t^2$, where $\theta$ is in radian and $t$ in s; The angular velocity at $t=1 \mathrm{~s}$ is
MCQ+1 / -02026
3Rotational Motion
A bullet, fired into a door gets embedded exactly at it's centre, causing the door to rotate about it's vertical axis, practically without friction, with an angular velocity of $0.625 \mathrm{rads}^{-1}$. The door is 1.0 m wide and weighs 1...
MCQ+1 / -02026
4Rotational Motion
A singer, during his performance, stands on the edge of a circular turntable, and begins to walk along its edge with a speed of $1.5 \mathrm{~ms}^{-1}$ relative to the ground. The turn table is mounted on a frictionless vertical axle. Its r...
MCQ+1 / -02026
5Rotational Motion
A force of $-\mathrm{F} \hat{\mathbf{i}}$ acts at the origin of the coordinate system. The torque about the point $(0,1,-1)$ is:
MCQ+1 / -02025
6Rotational Motion
Applying a constant torque the speed of a flywheel is increased from 1800 rpm to 2400 rpm in 10 seconds. The number of revolutions made by the flywheel during this time is:
MCQ+1 / -02025
7Rotational Motion
A bullet of momentum $p$ is fired into a door and gets embedded exactly at the center of the door. The door is 1.0 m wide and weighs 12 kg . It is hinged at one end and rotates about a vertical axis practically without friction. The angular...
MCQ+1 / -02025
8Rotational Motion
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 the moment of inertia of the body is \(5 \mathrm{~kg} \mathrm{~m}^2\).
MCQ+1 / -02024
9Rotational Motion
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 \(5 \mathrm{~rad} \mathrm{s}^{-1}\). A particle of mass \(1 \mathrm{~kg}\) moving with a veloci...
MCQ+1 / -02024
10Rotational Motion
Joule second is the unit of
MCQ+1 / -02024
11Rotational Motion
An object of mass \(1 \mathrm{~kg}\) is allowed to hang tangentially from the rim of the wheel of radius R. When released from the rest, the block falls vertically through \(4 \mathrm{~m}\) height in 2 seconds. The moment of inertia is $$1 ...
MCQ+1 / -02024
12Rotational Motion
A record player is spinning at an angular velocity of \(45 \mathrm{~rpm}\) just before it is turned off. It then decelerates at a constant rate of \(0.8 \mathrm{~rad} \mathrm{~s}^{-1}\). The angular displacement is
MCQ+1 / -02024
13Rotational Motion
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 the center \(\mathrm{O}\). OP makes an angle of \(55^{\circ}\) with \(\mathrm{x}\) axis and...
MCQ+1 / -02023
14Rotational Motion
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 velocity \(\omega\). Four small spheres each of mass \(m\) (negligible radius) are kept ge...
MCQ+1 / -02023
15Rotational Motion
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. The angular frequency of composite disc
MCQ+1 / -02022