System of Particles & Rotational Motion is an important topic in the Physics section in MHT CET exam. Practising this topic will increase your score overall and make your conceptual grip on MHT CET exam stronger.
This article gives you a full set of MHT CET PYQs for System of Particles & Rotational Motion with explanations for effective preparation. Practice of MHT CET Physics PYQs including System of Particles & Rotational Motion questions regularly will improve accuracy, speed, and confidence in the MHT CET 2026 exam.
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MHT CET PYQs for System of Particles & Rotational Motion with Solutions
1.
A square frame $ABCD$ is formed by four identical rods each of mass 'm' and length 'l' This frame is in $XY$ -plane such that side $AB$ coincides with $X$-axis and side $AD$ along $Y$-axis. The moment of inertia of the frame about $X$-axis is- $\frac{5 ml^2}{3}$
- $\frac{2 ml^2}{3}$
- $\frac{4 ml^2}{3}$
- $\frac{ml^2}{12}$
2.
A metal disc of radius ‘R’ rotates with an angular velocity ‘ω’ about an axis perpendicular to its plane passing through its centre in a magnetic field of induction ‘B’ acting perpendicular to the plane of the disc. The induced e.m.f. between the rim and axis of the disc is (magnitude only)
\(\frac {BωR}{2}\)
\(\frac{Bω^2R^2}{2}\)
\(\frac {BωR ^2}{2}\)
\(\frac {Bω^2R}{2}\)
3.
A thin metal wire of length $'L'$ and uniform linear mass density $'\rho'$ is bent into a circular coil with $'O'$ as centre. The moment of inertia of a coil about the axis $XX'$ is- $\frac{3\rho L^{3}}{8\pi^{2}}$
- $\frac{\rho L^{3}}{4\pi^{2}}$
- $\frac{3\rho L^{2}}{4\pi^{2}}$
- $\frac{\rho L^{3}}{8\pi^{2}}$
4.
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 't' ?- $\frac{MR \omega}{4t}$
- $\frac{MR \omega}{2t}$
- $\frac{MR \omega}{t}$
- $MR \omega t $
5.
A mass tied to a string is whirled in a horizontal circular path with a constant angular velocity and its angular momentum is L. If the string is now halved, keeping angular velocity same, then the angular momentum will be
L
\(\frac {L}{4}\)
2L
\(\frac {L}{2}\)
6.
Turning effect is produced by- tangential component of force
- radial component of force
- transverse component of force
- None of the above
7.
A uniform rod of length $'6L'$ and mass $'8 \,m'$ is pivoted at its centre $'C'$. Two masses $'m'$ and $'2m'$ with speed $2v$, $v$ as shown strikes the rod and stick to the rod. Initially the rod is at rest. Due to impact, if it rotates with angular velocity $'\omega'$ then $'\omega'$ will be- $\frac{v}{5L}$
- zero
- $\frac{8v}{6L}$
- $\frac{11v}{3L}$
8.
By keeping moment of inertia of a body constant, if we double the time period, then angular momentum of body- remains constant
- becomes half
- doubles
- quadruples
9.
Moment of inertia of big drop is $ I $ . If $ 8 $ droplets are formed from big drop, then moment of inertia of small droplet is- $ \frac{I}{32} $
- $ \frac{I}{16} $
- $ \frac{I}{8} $
- $ \frac{I}{4} $
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