AIPMT 2012 Mains | Rotational Motion Question 44 | Physics

A circular platform is mounted on a frictionless vertical axle. Its radius R = 2 m and its moment of inertia about the axle is 200 kg m². It is initially at rest. A 50 kg man stands on the edge of the platform and begins to walk along the edge at the speed of 1 ms^$$-$$1 relative to the ground. Time taken by the man to complete one revolution is

$$\pi $$ s

$${{3\pi } \over 2}$$ s

2$$\pi $$ s

$${\pi \over 2}$$ s

AIPMT 2012 Mains

MCQ (Single Correct Answer)

-1

A car of mass m is moving on a level circular track of radius R. If $$\mu $$_s represents the static friction between the road and tyres of the car, the maximum speed of the car in circular motion is given by

$$\sqrt {{\mu _s}mRg} $$

$$\sqrt {{{Rg} \over {{\mu _s}}}} $$

$$\sqrt {{{mRg} \over {{\mu _s}}}} $$

$$\sqrt {{\mu _s}Rg} $$

AIPMT 2012 Mains

MCQ (Single Correct Answer)

-1

The moment of inertia of a uniform circular disc is maximum about an axis perpendicular to the disc and passing through

AIPMT 2012 Mains Physics - Rotational Motion Question 61 English

AIPMT 2012 Mains Physics - Rotational Motion Question 61 English

AIPMT 2012 Prelims

MCQ (Single Correct Answer)

-1

When a mass is rotating in a plane about a fixed point, its angular momentum is directed along

a line perpendicular to the plane of rotation

the line making an angle of 45^o to the plane of rotation

the radius

the tangent to the orbit

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Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution