Rotational Motion PYQs - Last 5 Years
JEE Main / Physics / Mechanics / 120 recent questions
PhysicsMechanics2022-2026
Practice 120 JEE Main 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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2022-2026
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Last 5 Years Rotational Motion Questions
Showing 20 of 120 filtered questions.
1Rotational Motion
The moment of inertia of a uniform thin rod about a perpendicular axis passing through one end is I1. The same rod is bent into a ring and its moment of inertia about a diameter is I2. If \({{{I_1}} \over {{I_2}}}\) is $${{x{\pi ^2}} \over ...
INTEGER+4 / -12022
2Rotational Motion
The torque of a force \(5 \hat{i}+3 \hat{j}-7 \hat{k}\) about the origin is \(\tau\). If the force acts on a particle whose position vector is \(2 i+2 j+k\), then the value of \(\tau\) will be
MCQ+4 / -12022
3Rotational Motion
The position vector of 1 kg object is \(\overrightarrow r = \left( {3\widehat i - \widehat j} \right)m\) and its velocity \(\overrightarrow v = \left( {3\widehat j + \widehat k} \right)m{s^{ - 1}}\). The magnitude of its angular momentum ...
INTEGER+4 / -12022
4Rotational Motion
Match List-I with List-II
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MCQ+4 / -12022
5Rotational Motion
A uniform disc with mass M = 4 kg and radius R = 10 cm is mounted on a fixed horizontal axle as shown in figure. A block with mass m = 2 kg hangs from a massless cord that is wrapped around the rim of the disc. During the fall of the block,...
INTEGER+4 / -12022
6Rotational Motion
A \(\sqrt {34}\) m long ladder weighing 10 kg leans on a frictionless wall. Its feet rest on the floor 3 m away from the wall as shown in the figure. If Ef and Fw are the reaction forces of the floor and the wall, then ratio of $${F_w}/{F_...
MCQ+4 / -12022
7Rotational Motion
A ball is spun with angular acceleration \(\alpha\) = 6t2 \(-\) 2t where t is in second and \(\alpha\) is in rads\(-\)2. At t = 0, the ball has angular velocity of 10 rads\(-\)1 and angular position of 4 rad. The most appropriate expression...
MCQ+4 / -12022
8Rotational Motion
Four identical discs each of mass '\(\mathrm{M}\)' and diameter '\(\mathrm{a}\)' are arranged in a small plane as shown in figure. If the moment of inertia of the system about \(\mathrm{OO}^{\prime}\) is \(\frac{x}{4} \,\mathrm{Ma}^{2}\). T...
INTEGER+4 / -12022
9Rotational Motion
A rolling wheel of 12 kg is on an inclined plane at position P and connected to a mass of 3 kg through a string of fixed length and pulley as shown in figure. Consider PR as friction free surface. The velocity of centre of mass of the wheel...
INTEGER+4 / -12022
10Rotational Motion
One end of a massless spring of spring constant k and natural length l0 is fixed while the other end is connected to a small object of mass m lying on a frictionless table. The spring remains horizontal on the table. If the object is made t...
MCQ+4 / -12022
11Rotational Motion
A pulley of radius \(1.5 \mathrm{~m}\) is rotated about its axis by a force \(F=\left(12 \mathrm{t}-3 \mathrm{t}^{2}\right) N\) applied tangentially (while t is measured in seconds). If moment of inertia of the pulley about its axis of rota...
INTEGER+4 / -12022
12Rotational Motion
A solid cylinder length is suspended symmetrically through two massless strings, as shown in the figure. The distance from the initial rest position, the cylinder should be unbinding the strings to achieve a speed of \(4 \mathrm{~ms}^{-1}\)...
INTEGER+4 / -12022
13Rotational Motion
A thin circular ring of mass M and radius R is rotating with a constant angular velocity 2 rads\(-\)1 in a horizontal plane about an axis vertical to its plane and passing through the center of the ring. If two
objects each of mass m be att...
objects each of mass m be att...
MCQ+4 / -12022
14Rotational Motion
A solid spherical ball is rolling on a frictionless horizontal plane surface about its axis of symmetry. The ratio of rotational kinetic energy of the ball to its total kinetic energy is
MCQ+4 / -12022
15Rotational Motion
A disc of mass \(1 \mathrm{~kg}\) and radius \(\mathrm{R}\) is free to rotate about a horizontal axis passing through its centre and perpendicular to the plane of disc. A body of same mass as that of disc is fixed at the highest point of th...
INTEGER+4 / -12022
16Rotational Motion
The radius of gyration of a cylindrical rod about an axis of rotation perpendicular to its length and passing through the center will be ___________ \(\mathrm{m}\).
Given, the length of the rod is \(10 \sqrt{3} \mathrm{~m}\).
Given, the length of the rod is \(10 \sqrt{3} \mathrm{~m}\).
INTEGER+4 / -12022
17Rotational Motion
If force \(\overrightarrow F = 3\widehat i + 4\widehat j - 2\widehat k\) acts on a particle position vector \(2\widehat i + \widehat j + 2\widehat k\) then, the torque about the origin will be :
MCQ+4 / -12022
18Rotational Motion
Moment of Inertia (M.I.) of four bodies having same mass 'M' and radius '2R' are as follows:
I1 = M.I. of solid sphere about its diameter
I2 = M.I. of solid cylinder about its axis
I3 = M.I. of solid circular disc about its diameter
I4 = M....
I1 = M.I. of solid sphere about its diameter
I2 = M.I. of solid cylinder about its axis
I3 = M.I. of solid circular disc about its diameter
I4 = M....
INTEGER+4 / -12022
19Rotational Motion
A solid cylinder and a solid sphere, having same mass \(M\) and radius \(R\), roll down the same inclined plane from top without slipping. They start from rest. The ratio of velocity of the solid cylinder to that of the solid sphere, with w...
MCQ+4 / -12022
20Rotational Motion
A metre scale is balanced on a knife edge at its centre. When two coins, each of mass 10 g are put one on the top of the other at the 10.0 cm mark the scale is found to be balanced at 40.0 cm mark. The mass of the metre scale is found to be...
INTEGER+4 / -12022