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A ring of mass 10 kg and diameter 0.4 m is made to turn 2100 rev/min about its axis. The ring will then have an angular momentum of

44 kgm2/s2

88 kgm2/s2

132 kgm2/s2

176 kgm2/s2

A ring (mass 0.3 kg and radius 0.1 m) and a solid cylinder (mass 0.4 kg and radius 0.1 m) are given the same kinetic energy and released simultaneously on a flat horizontal surface such that they begin to roll towards a wall which is at the same distance from the ring and cylinder. If the rolling friction is negligible, then :

cylinder will reach the wall first

ring will reach the wall first

both will reach the wall at the same time

date is insufficient to make any prediction

A particle covers equal distances around a circular path in equal intervals of time. Which of the following parameters connected with the motion of particle remains constant with time?

displacement

speed

velocity

acceleration

A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that the particle has

motion in a circular path

constant velocity

constant acceleration

constant kinetic energy

A particle is moving along a circular path with uniform speed. The force acting on the particle is

zero

constant is magnitude only

continuously varying in magnitude and direction

constant both in magnitude and direction

For a particle moving in a circular orbit of radius 0.4 m, the angular velocity and angular acceleration at a particular instant are 2rad/s and 5rad/s2. The particle then has a total linear acceleration of

1.9 m/s2

2.69 m/s2

3.8 m/s2

7.24 m/s2

An aircraft executes a horizontal loop of radius 1 km with a steady speed of 900 km/hr. In terms of acceleration due to gravity (g = 10 m/s2), the centripetal acceleration of aircraft would be

3.12 g

6.25 g

12.5 g

18.75 g

Starting from rest, a particle travels on a circular path and the distance covered is prescribed by the relation s = kt2; where k is constant and t is the time. The particle then has a tangential acceleration of

k/2

k

2k

4k

A stone tied to the end of a string 1000 cm ling is whirled in a horizontal circle with a constant speed. If the stone makes 15 revolutions in 30 seconds, the acceleration of the stone is closest to

315 cm/s2

630 cm/s2

985 cm/s2

3950 cm/s2

A person standing on a uniformly rotating turn table has his arms held close to his chest. If he outstretches his arms

the moment of inertia will decrease

the angular momentum will increase

the speed of rotation will decrease

the angular velocity will remain constant

44 kgm2/s2

88 kgm2/s2

132 kgm2/s2

176 kgm2/s2

A ring (mass 0.3 kg and radius 0.1 m) and a solid cylinder (mass 0.4 kg and radius 0.1 m) are given the same kinetic energy and released simultaneously on a flat horizontal surface such that they begin to roll towards a wall which is at the same distance from the ring and cylinder. If the rolling friction is negligible, then :

cylinder will reach the wall first

ring will reach the wall first

both will reach the wall at the same time

date is insufficient to make any prediction

A particle covers equal distances around a circular path in equal intervals of time. Which of the following parameters connected with the motion of particle remains constant with time?

displacement

speed

velocity

acceleration

A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that the particle has

motion in a circular path

constant velocity

constant acceleration

constant kinetic energy

A particle is moving along a circular path with uniform speed. The force acting on the particle is

zero

constant is magnitude only

continuously varying in magnitude and direction

constant both in magnitude and direction

For a particle moving in a circular orbit of radius 0.4 m, the angular velocity and angular acceleration at a particular instant are 2rad/s and 5rad/s2. The particle then has a total linear acceleration of

1.9 m/s2

2.69 m/s2

3.8 m/s2

7.24 m/s2

An aircraft executes a horizontal loop of radius 1 km with a steady speed of 900 km/hr. In terms of acceleration due to gravity (g = 10 m/s2), the centripetal acceleration of aircraft would be

3.12 g

6.25 g

12.5 g

18.75 g

Starting from rest, a particle travels on a circular path and the distance covered is prescribed by the relation s = kt2; where k is constant and t is the time. The particle then has a tangential acceleration of

k/2

k

2k

4k

A stone tied to the end of a string 1000 cm ling is whirled in a horizontal circle with a constant speed. If the stone makes 15 revolutions in 30 seconds, the acceleration of the stone is closest to

315 cm/s2

630 cm/s2

985 cm/s2

3950 cm/s2

A person standing on a uniformly rotating turn table has his arms held close to his chest. If he outstretches his arms

the moment of inertia will decrease

the angular momentum will increase

the speed of rotation will decrease

the angular velocity will remain constant

TOPIC: CIRCULAR MOTION

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