Question # 1

For a particle in circular motion the centripetal acceleration

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may be more or less than its tangential acceleration

equal to its tangential acceleration a

more than its tangential acceleration

less than its tangential acceleration

In uniform circular motion, the factor that remains constant is

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Linear velocity

Centripetal force

Acceleration

speed

For a particle moving in uniform circular motion

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Velocity is transverse and acceleration is radical

Velocity is radial and acceleration is transverse

Both velocity and acceleration are radial

Both velocity and acceleration are transverse

A body crosses the topmost point of a vertical circle with critical speed. Itscentripetal acceleration, when the string is horizontal will be

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4g

3g

g

6g

A point on the rim of a wheel 4m in diameter has a velocity of 1600 cm s-1. The angular velocity of the wheel is

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2 rad s^-1

4 rad s^-1

6 rad s^-1

8 rad s^-1

A point on the rim of wheel 400 cm in diameter has a velocity of 1600 cms-1 . The angular velocity of the wheel is:

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6 rad/s

4 rad/s

2 rad/s

8 rad/s

Geo stationary satellite remains

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Stationary

Both "A" & "B"

Appear

None of them

A body revolved around the sun 27 times faster then the earth what is the ratioof their radii

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1/27

1/4

1/9

1/3

If the radius of the circular path of particle going around the circle is doubled without changing its frequency of rotation, then centripetal force on it is.

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doubled

halved

unchanged

quadrupled

A satellite moving round the earth constitute

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An inertial frame of reference

Non inertial frame

Neither inertial nor non inertial

Both inertial and non-inertial

In uniform circular motion, the factor that remains constant is:

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Linear velocity

Acceleration

Speed

All of these

For a body moving with constant speed in a horizontal circle, which of the following remains constant?

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Velocity

Centripetal force

Acceleration

Kinetic energy

In case of planets the necessary acceleration is provided by

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Gravitational force

coulomb force

frictional force

centripetal force

The kinetic energy of a body rotating with an angular speed 𝑚 depends on.

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angular speed

distribution of mass

neither (A) nor (B)

both (A) and (B)

A body is moving in a circle with a constant speed. it has

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a constant velocity

a constant acceleration

a velocity of constant magnitude

an acceleration of constant magnitude

The time period of revolution of geostationary satellite is

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1440 minutes

24 minutes

84 minutes

none of these

A couple produces

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linear motion

rotational motion

both (A) and (B)

None

Angular displacement in rotational motion is expressed in

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m

m²

Nms-1

Nm s

When a particle moves in a uniform circular motion. It has:

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Radial velocity and radial acceleration

Tangential velocity and radial acceleration

Tangential velocity and tangential acceleration

Radial velocity and tangential acceleration

What happens to the centripetal acceleration of a particle, when its speed is doubled and angular velocity is halved?

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halved

doubled

remain unchanged

becomes four times

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