Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 2>Q 30

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A car of mass $m$ is travelling on a horizontal circular path of radius $r$ . At an instant its speed is $v$ and tangential acceleration is $a$ .

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Important Questions on Circular Motion

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Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 2>Q 31

A car is moving with constant speed on a road as shown in figure. The normal reaction by the road on the car is $N_{A}, N_{B}$ and $N_{C}$ when it is at the points $A, B$ and $C$ , respectively.

Question Image

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Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 2>Q 32

A simple pendulum of length

L

and mass (bob)

M

is oscillating in a plane about a vertical line between angular limits

- ϕ and ϕ

. For an angular displacement

θ, [|θ| < ϕ]

the tension in the string and velocity of the bob are

T

and

v

, respectively. The following relations hold good under the above conditions

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Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 2>Q 33

Which of the following quantities may remain constant during the motion of an object along a curved path.

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Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 2>Q 34

Assuming the motion of Earth around the Sun as a circular orbit with a constant speed of

30 km h^{- 1}

.

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Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 2>Q 35

A curved section of a road is banked for a speed

v

. If there is no friction between road and tyres of the car, then

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Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 2>Q 36

A car of mass

m

attempts to go on the circular road of radius

r

, which is banked for a speed of

36 km {hr}^{- 1}

. The friction coefficient between the tyre and the road is negligible.

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Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 2>Q 37

A particle is attached to an end of a rigid rod. The other end of the rod is hinged and the rod rotates always remaining horizontal. Its angular speed is increasing at constant rate. The mass of the particle is

m

. The force exerted by the rod on the particle is

\overset{⇀}{F}

, then

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Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 2>Q 38

A particle moves along a horizontal circle such that the radial force acting on it is directly proportional to square of time. Then choose the correct option :