# Rotational Motion (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 122 - 125 of 125

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## Question number: 122

» Rotational Motion » Rotational Kinetic Energy

Appeared in Year: 2016

MCQ▾

### Question

Two rotating bodies A and B of masses and with moments of inertia and , have equal kinetic energy of rotation. If and be their angular momenta respectively, then –

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Choice (4) Response

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b.

c.

d.

## Question number: 123

» Rotational Motion » Rotational Kinetic Energy

Appeared in Year: 2016

MCQ▾

### Question

A solid sphere of mass and radius is rotating about its diameter. A solid cylinder of the same mass and same radius is also rotating about its geometrical axis with an angular speed twice that of the sphere. The ratio of their kinetic energies of rotation will be:

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c.

d.

## Question number: 124

» Rotational Motion » Torque

Appeared in Year: 2017

MCQ▾

### Question

A rope is wound around a hollow cylinder of mass and radius . What is the angular acceleration of the cylinder if the rope is pulled with a force of ?

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## Question number: 125

» Rotational Motion » Conservation of Angular Momentum

Appeared in Year: 2017

MCQ▾

### Question

Two discs of same moment of inertia rotating about their regular axis passing through centre and perpendicular to the plane of disc with angular velocities . They are brought into contact face to face coinciding the axis of rotation. The expression for loss of energy during this process is –

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Choice (4) Response

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