NEET 2022 Phase 2 | Rotational Motion Question 8 | Physics

NEET 2022 Phase 2

MCQ (Single Correct Answer)

-1

An energy of 484 J is spent in increasing the speed of a flywheel from 60 rpm to 360 rpm. The moment of inertia of the flywheel is :

0.07 kg-m²

0.7 kg-m²

3.22 kg-m²

30.8 kg-m²

NEET 2022 Phase 1

MCQ (Single Correct Answer)

-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

2$$\pi$$

4$$\pi$$

12$$\pi$$

104$$\pi$$

NEET 2022 Phase 1

MCQ (Single Correct Answer)

-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

2 : 1

$$\sqrt2$$ : 1

4 : 1

1 : $$\sqrt2$$

NEET 2021

MCQ (Single Correct Answer)

-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 :

$${1 \over 8}$$

$${3 \over 4}$$

$${7 \over 8}$$

$${1 \over 4}$$

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