1
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
$$2 \pi \mathrm{~rad} / \mathrm{s}^2$$
2
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

KCET 2021 Physics - Rotational Motion Question 1 English

A
sphere
B
ring
C
disc
D
hollow cylinder
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