Rotational Motion PYQs - Last 5 Years

MHT CET / Physics / Mechanics / 131 recent questions

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All Rotational Motion PYQs Last 10 Years Create chapter test

Practice 131 MHT CET 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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Last 5 Years Rotational Motion Questions

Showing 31 of 131 filtered questions.

1Rotational Motion

A solid metallic sphere of radius ' $R$ ' having moment of inertia '$I$' about diameter is melted and recast into a solid disc of radius ' $r$ ' of a uniform thickness. The moment of inertia of a disc about an axis passing through its edge ...

2Rotational Motion

A ring and a disc roll on horizontal surface without slipping with same linear velocity. If both have same mass and total kinetic energy of the ring is 6 J then total kinetic energy of the disc is

3Rotational Motion

Two bodies A and B have their moments of inertia $I_1$ and $I_2$ respectively about their axis of rotation. If their kinetic energies of rotation are equal and their angular momenta $\mathrm{L}_1$ and $\mathrm{L}_2$ respectively are in the ...

4Rotational Motion

Two discs of same mass and same thickness (t) are made from two different materials of densities '\(d_1\)' and '\(d_2\)' respectively. The ratio of the moment of inertia \(I_1\) to \(I_2\) of two discs about an axis passing through the cent...

5Rotational Motion

A solid sphere rolls without slipping on an inclined plane at an angle \(\theta\). The ratio of total kinetic energy to its rotational kinetic energy is

6Rotational Motion

A square lamina of side '\(b\)' has same mass as a disc of radius '\(R\)' the moment of inertia of the two objects about an axis perpendicular to the plane and passing through the centre is equal. The ratio \(\frac{b}{R}\) is

7Rotational Motion

A disc of radius \(R\) and thickness \(\frac{R}{6}\) has moment of inertia I about an axis passing through its centre and perpendicular to its plane. Dise is melted and recast into a solid sphere. The moment of inertia of a sphere about its...

8Rotational Motion

A thin uniform rod of mass '\(m\)' and length '\(P\)' is suspended from one end which can oscillate in a vertical plane about the point of intersection. It is pulled to one side and then released. It passes through the equilibrium position ...

9Rotational Motion

A mass '\(M\)' is moving with constant velocity parallel to \(\mathrm{X}\)-axis. Its angular momentum with respect to the origin is

10Rotational Motion

A solid cylinder and a solid sphere having same mass and same radius roll down on the same inclined plane. The ratio of the acceleration of the cylinder '\(a_c\)' to that of sphere '\(a_s\)' is

11Rotational Motion

Four identical uniform solid spheres each of same mass '\(M\)' and radius '\(R\)' are placed touching each other as shown in figure, with centres A, B, C, D. \(\mathrm{I}_{\mathrm{A}}, \mathrm{I}_{\mathrm{B}}, \mathrm{I}_{\mathrm{C}}\) and ...

12Rotational Motion

A solid cylinder of mass \(3 \mathrm{~kg}\) is rolling on a horizontal surface with velocity \(4 \mathrm{~m} / \mathrm{s}\). It collides with a horizontal spring whose one end is fixed to rigid support. The force constant of material of spr...

13Rotational Motion

The rotational kinetic energy and translational kinetic energy of a rolling body are same, the body is

14Rotational Motion

A rigid body rotates with an angular momentum L. If its rotational kinetic energy is made four times, its angular momentum will become

15Rotational Motion

A thin uniform \(\operatorname{rod} A B\) of mass \(m\) and length \(l\) is hinged at one end \(A\) to the ground level. Initially the rod stands vertically and is allowed to fall freely to the ground in the vertical plane. The angular velo...

16Rotational Motion

Four identical uniform solid spheres each of same mass \(M\) and radius \(R\) are placed touching each other as shown in figure with centres \(A, B, C, D. I_A, I_B, I_C, I_D\) are the moment of inertia of these spheres respectively about an...

17Rotational Motion

A thin uniform circular disc of mass '\(\mathrm{M}\)' and radius '\(R\)' is rotating with angular velocity '\(\omega\)', in a horizontal plane about an axis passing through its centre and perpendicular to its plane. Another disc of same rad...

18Rotational Motion

\(I_1\) is the moment of inertia of a circular disc about an axis passing through its centre and perpendicular to the plane of disc. \(I_2\) is its moment of inertia about an axis \(A B\) perpendicular to plane and parallel to axis $$\mathr...

19Rotational Motion

In \(\mathrm{P}^{\text {th }}\) second, a particle describes angular displacement of '\(\beta\)' rad. If it starts from rest, the angular acceleration is

20Rotational Motion

A thin wire of length '\(L\)' and uniform linear mass density '\(m\)' is bent into a circular coil. The moment of inertia of this coil about tangential axis and in plane of the coil is

21Rotational Motion

A disc has mass \(M\) and radius \(R\). How much tangential force should be applied to the rim of the disc, so as to rotate with angular velocity '\(\omega\)' in time \(\mathrm{t}\) ?

22Rotational Motion

Radius of gyration of a thin uniform circular disc about the axis passing through its centre and perpendicular to its plane is \(\mathrm{K}_{\mathrm{c}}\). Radius of gyration of the same disc about a diameter of the disc is \(K_d\). The rat...

23Rotational Motion

A particle moves along a circular path with decreasing speed. Hence

24Rotational Motion

From a disc of mass '\(M\)' and radius '\(R\)', a circular hole of diameter '\(R\)' is cut whose rim passes through the centre. The moment of inertia of the remaining part of the disc about perpendicular axis passing through the centre is

25Rotational Motion

Two bodies have their moments of inertia I and 2I respectively about their axis of rotation. If their kinetic energies of rotation are equal, their angular momenta will be in the ratio

26Rotational Motion

A particle of mass '\(\mathrm{m}\)' is rotating along a circular path of radius '\(r\)' having angular momentum '\(L\)'. The centripetal force acting on the particle is given by

27Rotational Motion

Seven identical discs each of mass \(M\) and radius \(\mathrm{R}\) are arranged in a hexagonal plane pattern so as to touch each neighbour disc as shown in the figure. The moment of inertia of the system of seven discs about an axis passing...

28Rotational Motion

If 'I' is moment of inertia of a thin circular disc about an axis passing through the tangent of the disc and in the plane of disc. The moment of inertia of same circular disc about an axis perpendicular to plane and passing through its cen...

29Rotational Motion

The moment of inertia of a uniform square plate about an axis perpendicular to its plane and passing through the centre is \(\frac{\mathrm{Ma}^2}{6}\), where '\(M\)' is the mass and '\(a\)' is the side of square plate. Moment of inertia of ...

30Rotational Motion

Two spheres each of mass '\(M\)' and radius \(\frac{R}{2}\) are connected at the ends of massless rod of length '\(2 R\)'. What will be the moment of inertia of the system about an axis passing through centre of one of the spheres and perpe...

31Rotational Motion

What is the moment of inertia of the electron moving in second Bohr orbit of hydrogen atom? [ \(\mathrm{h}=\) Planck's constant, \(\mathrm{m}=\) mass of electron, \(\varepsilon_0=\) permittivity of free space, \(\mathrm{e}=\) charge on elec...