1
KCET 2023
MCQ (Single Correct Answer)
+1
-0

The moment of inertia of a rigid body about an axis

A
does not depend on its mass.
B
does not depend on its shape.
C
depends on the position of axis of rotation.
D
does not depend on its size.
2
KCET 2023
MCQ (Single Correct Answer)
+1
-0

Seven identical discs are arranged in a planar pattern, so as to touch each other as shown in the figure. Each disc has mass $$m$$ radius $$R$$. What is the moment of inertia of system of six discs about an axis passing through the centre of central disc and normal to plane of all discs?

A
$$27 ~m R^2$$
B
$$100 ~m R^2$$
C
$$55 \frac{m R^2}{2}$$
D
$$85 \frac{m R^2}{2}$$
3
KCET 2022
MCQ (Single Correct Answer)
+1
-0

The angular speed of a motor wheel is increased from $$1200 \mathrm{~rpm}$$ to $$3120 \mathrm{~rpm}$$ in $$16 \mathrm{~s}$$. The angular acceleration of the motor wheel is

A
$$4 \pi \mathrm{~rad} / \mathrm{s}^2$$
B
$$6 \pi \mathrm{~rad} / \mathrm{s}^2$$
C
$$8 \pi \mathrm{~rad} / \mathrm{s}^2$$
D
$$2 \pi \mathrm{~rad} / \mathrm{s}^2$$
4
KCET 2021
MCQ (Single Correct Answer)
+1
-0

In figure $$E$$ and $$v_{\mathrm{cm}}$$ represent the total energy and speed of centre of mass of an object of mass $$1 \mathrm{~kg}$$ in pure rolling. The object is

A
sphere
B
ring
C
disc
D
hollow cylinder
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