1
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

The angular speed of a fly wheel moving with uniform angular acceleration changes from 1200 rpm to 3120 rpm in 16 seconds. The angular acceleration in rad/s2 is

A
2$$\pi$$
B
4$$\pi$$
C
12$$\pi$$
D
104$$\pi$$
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

The ratio of the radius of gyration of a thin uniform disc about an axis passing through its centre and normal to its plane to the radius of gyration of the disc about its diameter is

A
2 : 1
B
$$\sqrt2$$ : 1
C
4 : 1
D
1 : $$\sqrt2$$
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
From a circular ring of mass 'M' and radius 'R' an arc corresponding to a 90$$^\circ$$ sector is removed. The moment of inertia of the remaining part of the ring about an axis passing through the center of the ring and perpendicular to the plane of the ring is 'K' times 'MR2'. Then the value of 'K' is :
A
$${1 \over 8}$$
B
$${3 \over 4}$$
C
$${7 \over 8}$$
D
$${1 \over 4}$$
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
A uniform rod of length 200 cm and mass 500 g is balanced on a wedge placed at 40 cm mark. A mass of 2 kg is suspended from the rod at 20 cm and another unknown mass 'm' is suspended from the rod at 160 cm mark as shown in the figure. Find the value of 'm' such that the rod is in equilibrium. (g = 10 m/s2)

NEET 2021 Physics - Rotational Motion Question 12 English
A
$${1 \over {12}}$$kg
B
$${1 \over {2}}$$kg
C
$${1 \over {3}}$$kg
D
$${1 \over {6}}$$kg
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