MHT CET 2025 19th April Morning Shift | Rotational Motion Question 22 | Physics

When a ceiling fan is switched off, its angular velocity falls to $\left(\frac{1}{3}\right)^{\text {rd }}$ while it makes 24 rotations. How many more rotations will it make before coming to rest?

MHT CET 2024 16th May Evening Shift

MCQ (Single Correct Answer)

-0

Three point masses, each of mass ' $m$ ' are placed at the corners of an equilateral triangle of side ' $L$ '. The moment of inertia of the system about an axis passing through one of the vertices and parallel to the side joining other two vertices will be

$\frac{3 \mathrm{~mL}^2}{4}$

$\frac{\mathrm{mL}^2}{4}$

$\frac{3 \mathrm{~mL}^2}{2}$

$\frac{\mathrm{mL}^2}{2}$

MHT CET 2024 16th May Morning Shift

MCQ (Single Correct Answer)

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Two spheres of equal masses, one of which is a thin spherical shell and the other solid sphere, have the same moment of inertia about their respective diameters. The ratio of their radii is

$3: 5$

$\sqrt{3}: \sqrt{5}$

$\sqrt{3}: \sqrt{7}$

$5: 7$

MHT CET 2024 16th May Morning Shift

MCQ (Single Correct Answer)

-0

Two loops P and Q of radii $\mathrm{R}_1$ and $\mathrm{R}_2$ are made from uniform metal wire of same material. $I_p$ and $\mathrm{I}_{\mathrm{Q}}$ be the moment of inertia of loop P and Q respectively then ratio $R_1 / R_2$ is $\left(\right.$ Given $\left.I_P / I_Q=27\right)$

$4: 1$

$3: 1$

$9: 1$

$6: 1$

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