Physics Crash Course MHT-CET>Chapter 3 - Circular Motion>Exercise 1>Q 63

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If a body moves with constant speed along a curved path, its tangential acceleration is

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Important Questions on Circular Motion

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Physics Crash Course MHT-CET>Chapter 3 - Circular Motion>Exercise 1>Q 64

Two particles

A

and

B

are located at distances

r_{A}

and

r_{B}

, respectively, from the centre of a rotating disc such that

r_{A} > r_{B}

. In this case, if angular velocity

ω

of rotation is constant, then,

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Physics Crash Course MHT-CET>Chapter 3 - Circular Motion>Exercise 1>Q 65

Let

a_{r}

and

a_{t}

represent radial and tangential acceleration, respectively. The motion of a particle is circular if

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Physics Crash Course MHT-CET>Chapter 3 - Circular Motion>Exercise 1>Q 66

A stone tied to one end of string,

80 cm

long, is whirled in a horizontal circle at a constant speed. If stone makes

25

revolutions in

14 s

, the magnitude of the acceleration of stone is (approximately)

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Physics Crash Course MHT-CET>Chapter 3 - Circular Motion>Exercise 1>Q 67

A particle is going with constant speed along a uniform helical and spiral path separately as shown in figure. (in case $(a)$ , vertical acceleration of particle is negligible)

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Physics Crash Course MHT-CET>Chapter 3 - Circular Motion>Exercise 1>Q 68

The mass of a body measured by a physical balance in a lift at rest is found to be

m

. If the lift is going up with an acceleration

a

, its mass will be measured as

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Physics Crash Course MHT-CET>Chapter 3 - Circular Motion>Exercise 1>Q 69

A particle tied to a string describes a vertical circular motion of radius

r

continually. If it has a velocity

\sqrt{3 g r}

at the highest point, then the ratio of the respective tensions in the string holding it at the highest and lowest points is

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Physics Crash Course MHT-CET>Chapter 3 - Circular Motion>Exercise 1>Q 72

The force required to keep a body in uniform circular motion is,

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Physics Crash Course MHT-CET>Chapter 3 - Circular Motion>Exercise 1>Q 73

A vehicle moving on a horizontal road may be thrown outwards due to,