Alpha Question Bank for Medical: Physics>Chapter 7 - Circular Motion>Exercise-1>Q 28

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If mass, speed and radius of rotation of a body, moving on a circular path, are increased by $50 %$ , then to keep the body moving in the circular path, the increase in force required will be,

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Important Questions on Circular Motion

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Alpha Question Bank for Medical: Physics>Chapter 7 - Circular Motion>Exercise-1>Q 29

A motorcycle driver doubles its velocity when he is having a turn. The force exerted outwardly will be

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Alpha Question Bank for Medical: Physics>Chapter 7 - Circular Motion>Exercise-1>Q 30

For a particle in circular motion, the centripetal acceleration

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Alpha Question Bank for Medical: Physics>Chapter 7 - Circular Motion>Exercise-1>Q 31

If the radii of circular paths of two particles of same masses are in the ratio of

1 : 2

, then in order to have same centripetal force, their speeds should be in the ratio of:

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Alpha Question Bank for Medical: Physics>Chapter 7 - Circular Motion>Exercise-1>Q 32

On a horizontal smooth surface, a mass of

2 kg

is whirled in a horizontal circle by means of a string at an initial angular speed of

5 rpm

. Keeping the radius constant, the tension in the string is doubled. The new angular speed is nearly,

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Alpha Question Bank for Medical: Physics>Chapter 7 - Circular Motion>Exercise-1>Q 33

a_{r}

and

a_{t}

represent radial and tangential accelerations, respectively. The motion of the particle is uniformly circular only if,

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Alpha Question Bank for Medical: Physics>Chapter 7 - Circular Motion>Exercise-1>Q 34

A string breaks if its tension exceeds

10 N

. A stone of mass

250 gm

tied to this string of length

10 cm

is rotated in a horizontal circle. The maximum angular velocity of rotation can be

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Alpha Question Bank for Medical: Physics>Chapter 7 - Circular Motion>Exercise-1>Q 35

A particle moving along a circular path due to a centripetal force having constant magnitude is an example of motion with:

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Alpha Question Bank for Medical: Physics>Chapter 7 - Circular Motion>Exercise-1>Q 36

A stone of mass

0.5 kg

tied with a string of length

1 m

is moving in a circular path with a speed of

4 m \sec^{- 1}

. The tension acting on the string in Newton is