1
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

When a 12000 joule of work is done on a flywheel, its frequency of rotation increases from 10 Hz to 20 Hz . The moment of inertia of flywheel about its axis of rotation is $\left(\pi^2=10\right)$

A
$1 \mathrm{~kgm}^2$
B
$2 \mathrm{~kgm}^2$
C
$1.688 \mathrm{~kgm}^2$
D
$1.5 \mathrm{~kgm}^2$
2
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A rigid body is rotating with angular velocity ' $\omega$ ' about an axis of rotation. Let $v$ ' be the linear velocity of particle which is at perpendicular distance ' $r$ ' from the axis of rotation. Then the relation $v=r \omega$ ' implies that

A
$\omega$ does not depend on $r$
B
$\omega \propto \frac{1}{r}$
C
$\omega \propto r$
D
$\omega=0$
3
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If radius of the solid sphere is doubled by keeping its mass constant, the ratio of their moment of inertia about any of its diameter is

A
$1: 8$
B
$2: 5$
C
$2: 3$
D
$1: 4$
4
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A uniform rod of length ' 6 L ' and mass ' 8 m ' is pivoted at its centre ' $C$ '. Two masses ' $m$ ' and ' $2 m^{\prime}$ with speed $2 v, v$ 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

MHT CET 2019 2nd May Morning Shift Physics - Rotational Motion Question 65 English

A
$\frac{V}{5 L}$
B
zero
C
$\frac{8 v}{6 L}$
D
$\frac{11 v}{3 L}$
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