Uniform Circular Motion & Real-Life Applications Worksheet

 

Worksheet: Uniform Circular Motion & Real-Life Applications

Physics MCQ Worksheet (JEE Main / NEET / CBSE Class 11)

Total Questions: 20
Type: Multiple Choice Questions (MCQs)
Level: Moderate to Advanced

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Conceptual Questions (1–10)

1.

A particle moves with constant speed along a circular path. Which statement is correct?

A) Both speed and velocity remain constant.
B) Speed changes continuously.
C) Velocity changes continuously because its direction changes.
D) Neither speed nor velocity changes.

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2.

The acceleration of a body moving with uniform speed in a circle is always

A) Along the tangent to the circle
B) Away from the center
C) Towards the center
D) Zero

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3.

Which of the following quantities remains constant during uniform circular motion?

A) Velocity
B) Momentum
C) Kinetic energy
D) Acceleration vector

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4.

A stone tied to a string is rotated in a horizontal circle. If the string suddenly breaks, the stone moves

A) Towards the center
B) Along the tangent at the breaking point
C) Along the radius outward
D) In a circular path

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5.

The centripetal force acting on a body moving in a circle is provided by

A) A new type of force
B) Any force directed towards the center
C) Gravitational force only
D) Magnetic force only

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6.

A car takes a circular turn on a level road. The centripetal force is supplied by

A) Engine force
B) Air resistance
C) Friction between tyres and road
D) Weight of the car

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7.

The direction of centripetal acceleration is always

A) Along velocity
B) Opposite velocity
C) Towards the center of the circle
D) Away from the center

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8.

A satellite revolves around Earth in a circular orbit because

A) Air resistance provides centripetal force
B) Earth's gravitational force acts as centripetal force
C) Magnetic force acts on the satellite
D) The satellite has no acceleration

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9.

Which of the following is NOT an example of uniform circular motion?

A) A ceiling fan rotating at constant speed
B) Earth revolving around the Sun (approximately)
C) A car moving around a circular track with constant speed
D) A freely falling stone

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10.

In a giant wheel moving with constant speed, a passenger experiences

A) Zero acceleration
B) Constant downward acceleration only
C) Centripetal acceleration towards the center
D) Tangential acceleration only

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Numerical & Application Questions (11–20)

11.

A particle moves in a circle of radius 2 m with speed 4 m/s. Its centripetal acceleration is

A) 2 m/s²
B) 4 m/s²
C) 8 m/s²
D) 16 m/s²

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12.

A car moves around a circular track of radius 50 m at 10 m/s. The centripetal acceleration is

A) 1 m/s²
B) 2 m/s²
C) 4 m/s²
D) 5 m/s²

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13.

A cyclist rides around a circular path of radius 20 m at 5 m/s. The centripetal force on the cyclist (mass = 60 kg) is

A) 50 N
B) 75 N
C) 100 N
D) 150 N

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14.

A satellite moves in a circular orbit with speed 8000 m/s and radius $8\times10^6$m. Its centripetal acceleration is

A) 4 m/s²
B) 6 m/s²
C) 8 m/s²
D) 10 m/s²

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15.

A washing machine drum rotates with angular speed such that clothes remain pressed against the wall. The force responsible is

A) Weight
B) Normal reaction acting towards the center
C) Friction only
D) Air resistance

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16.

A motorcycle rounds a circular curve of radius 40 m at 20 m/s. The required centripetal acceleration is

A) 5 m/s²
B) 8 m/s²
C) 10 m/s²
D) 12 m/s²

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17.

A fan rotates at 300 rpm. The angular speed is closest to

A) $10\pi$ rad/s
B) $20\pi$ rad/s
C) $30\pi$ rad/s
D) $40\pi$ rad/s

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18.

A Ferris wheel has radius 15 m and completes one revolution in 30 s. The speed of a passenger is approximately

A) 1.57 m/s
B) 2.14 m/s
C) 3.14 m/s
D) 4.71 m/s

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19.

A string can withstand a maximum tension of 80 N. A 2 kg stone is rotated in a horizontal circle of radius 5 m. The maximum possible speed is

A) 10 m/s
B) 12 m/s
C) 14.1 m/s
D) 16 m/s

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20.

A pilot flying a jet in a circular loop experiences maximum centripetal acceleration when

A) Speed is minimum
B) Radius is maximum
C) Speed is maximum and radius is minimum
D) Radius is maximum and speed is minimum

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Answer Key

Q.No	Answer
1	C
2	C
3	C
4	B
5	B
6	C
7	C
8	B
9	D
10	C
11	C
12	B
13	B
14	C
15	B
16	C
17	A
18	C
19	C
20	C