- Amal Augustine
- December 15, 2025
Best Rotational Dynamics MCQs: Banking, Centripetal Force & Uniform Circular Motion
Rotational dynamics mcqs and circular motion concepts play a critical role in understanding how objects move along curved paths. From vehicles negotiating banked roads to stones tied to strings rotating in circles, these principles of rational dynamics mcqs explain why speed can remain constant even when velocity continuously changes direction.
Rotational dynamics MCQs test a student’s ability to relate torque, angular acceleration, and moment of inertia in both conceptual and numerical problems.Most rotational dynamics mcqs questions emphasize real-world systems such as rotating wheels, rolling objects, and circular motion under constraints like friction and tension.Solving rotational dynamics MCQs requires a clear understanding of how linear quantities (force, velocity) translate into angular counterparts (torque, angular velocity).
In competitive exams like NEET, JEE Main, JEE Advanced, and Class 11–12 Physics tests, rotational dynamics MCQs are frequently used to assess conceptual clarity, formula application, and physical intuition. This rotational dynamics mcqs presents a comprehensive set of exam-oriented MCQs covering banking of roads, centripetal force, angular velocity, tension in strings, and uniform circular motion.
Rotational Dynamics MCQs (With Options & Correct Answers)
1.
For a radius of curvature, a vehicle moves at a constant speed of 10 m/s (g = 10 m/s²). The angle of banking is
A. 30°
B. tan⁻¹(1/2)
C. 60°
D. 45°
Answer: D
2.
A car of mass 1000 kg moves on a circular road with speed 20 m/s. Its direction changes by 90° after travelling 62
8 m. The centripetal force acting on the car is
A. 7500 N
B. 750 N
C. 1000 N
D. 1500 N
Answer: C
3.
Uniform circular motion is an example of
A. Constant speed motion
B. Constant velocity motion
C. Non-accelerated motion
D. Zero accelerated motion
Answer: A
4.
If the velocity–time graph of a particle is non-linear, the motion is
A. Uniform velocity motion
B. Uniformly accelerated motion
C. Non-uniform accelerated motion
D. Cannot be determined
Answer: C
5.
A brick of mass m, tied to a rope, is whirled in a vertical circle with uniform speed. The tension in the rope is
A. The same throughout
B. Largest at the highest point and smallest at the lowest point
C. Largest when the rope is horizontal
D. Largest at the lowest point and smallest at the highest point
Answer: D
6.
A particle moves with uniform speed v and time period T in a circular path. If the speed is doubled, the new time period is
A. T
B. T/2
C. 2T
D. T/4
Answer: B
7.
A particle moving in uniform circular motion has angular acceleration
A. V²/R along tangent
B. Zero
C. V²/R towards centre
D. Perpendicular to plane
Answer: B
8.
A 3 kg stone attached to a 2 m string is whirled in a horizontal circle making 45° with the vertical. The centripetal force is
A. 20 N
B. 30 N
C. 10 N
D. 40 N
Answer: A
9.
The magnitude of centripetal force on a particle of mass m in circular motion is
A. mω²/v
B. mv²/ω
C. m²ω²/v
D. mωv
Answer: D
10.
A ball of mass m tied to a string of length l moves in a horizontal circle. The angular velocity is proportional to
A. m/T
B. √(mT)
C. √(T/m)
D. T/m
Answer: C
11.
Two cars move in circles of radii r₁ and r₂ completing one revolution in the same time. The ratio of their linear speeds is
A. ω²
B. T : r₂
C. r₁ : r₂
D. m₁ : m₂
Answer: C
12.
A particle performing uniform circular motion of radius π/2\pi/2 makes x revolutions in time t. Its tangential velocity is
A. πxt2\frac{\pi x}{t^2}
B. πx2t\frac{\pi x^2}{t}
C. π2xt\frac{\pi^2 x}{t}
D. πtx2\frac{\pi t}{x^2}
Answer: C
13.
A particle moves in a circular path of diameter 50 cm with frequency 2 Hz. The acceleration of the particle is
A. 2π22\pi^2
B. 4π24\pi^2
C. 3π23\pi^2
D. 8π28\pi^2
Answer: B
14.
In uniform circular motion, when Δt→0\Delta t \to 0, the angle between change in velocity and velocity is
A. 0°
B. 45°
C. 90°
D. 180°
Answer: C
15.
A wheel completes 2000 revolutions to cover a distance of 9.42 km. The diameter of the wheel is
A. 1.3 m
B. 1.0 m
C. 1.5 m
D. 1.5 m
Answer: D
16.
Two stones of masses m and 3m are whirled in horizontal circles of radii r and 3r2\frac{3r}{2} respectively. If they experience the same centripetal force, the ratio of their tangential speeds is
A. 4
B. 1
C. 2
D. 3
Answer: D
17.
A ball of mass 0.25 kg attached to a string of length 1.96 m moves in a horizontal circle. The string breaks if tension exceeds 25 N. Maximum speed is
A. 14 m/s
B. 3 m/s
C. 3.92 m/s
D. 5 m/s
Answer: A
18.
In uniform circular motion, centripetal acceleration is
A. Towards centre and perpendicular to velocity
B. Constant acceleration
C. Away from centre
D. At 45° to velocity
Answer: A
19.
A cyclist bends while taking a turn to
A. Reduce friction
B. Provide centripetal force
C. Reduce weight
D. Reduce speed
Answer: B
20.
A 2 kg stone tied to a string of length 0.5 m has breaking tension 900 N. Maximum angular velocity is
A. 30 rad/s
B. 20 rad/s
C. 10 rad/s
D. 25 rad/s
Answer: A
21.
A stone tied to a string moves in a circle with constant speed. The torque on the stone is
A. mv
B. mv/l
C. mv²
D. mv²/l
E. Zero
Answer: Zero
22.
A discus reaches angular velocity 15 rad/s in 0.27 s moving in a circle of radius 0.81 m. Its acceleration is
A. 45 m/s²
B. 182 m/s²
C. 187 m/s²
D. 192 m/s²
Answer: A
23.
A wheel of radius 2 m rolls with speed 4 m/s. Relative acceleration of topmost point w.r.t bottommost point is
A. 8 m/s²
B. 16 m/s²
C. 32 m/s²
D. 4 m/s²
Answer: B
24.
Two particles P and Q are diametrically opposite. P has tangential acceleration 8 m/s² and centripetal 5 m/s²; Q has centripetal 1 m/s². Relative acceleration magnitude is
A. 14
B. 80
C. 10
D. 12
Answer: C
25.
A particle moves in a circle of radius 100 m with time period 2 s. Centripetal acceleration is
A. 98.5 m/s²
B. 198.5 m/s²
C. 49.29 m/s
D. 985.9 m/s²
Answer: D
26.
If acceleration a = 2i + 3j and momentum p = 6i − 4j, the motion is
A. Uniform circular motion
B. Circular with tangential acceleration
C. Circular with tangential retardation
D. Cannot be determined
Answer: A
27.
A body moving in a circle at constant speed has
A. Constant velocity
B. No acceleration
C. Inward radial acceleration
D. Outward radial acceleration
Answer: C
28.
A particle completes a semicircle of radius 1 m in 1 s. Its average speed is
A. 3.14 m/s
B. 2.0 m/s
C. 1.0 m/s
D. Zero
Answer: B
29.
If linear speed is doubled and angular speed is halved, centripetal acceleration
A. Remains unchanged
B. Halved
C. Doubled
D. Becomes four times
Answer: A
30.
A particle moves in a circle of radius 5 m with speed 5 m/s. Average acceleration over half revolution is
A. Zero
B. 10 m/s²
C. 10π10\pi m/s²
D. 10π\frac{10}{\pi} m/s²
Answer: D
Conclusion
Rotational dynamics mcqs problems form a crucial part of physics examinations because it test an aspirant’s understanding of acceleration, force, velocity, and real-world motion simultaneously. Through rotational dynamics MCQs on uniform circular motion, banking of roads, centripetal force, angular velocity, and tension in strings, students learn how direction change alone can produce acceleration even when speed remains constant. These rotational dynamics mcqs concepts are essential for connecting theoretical physics with everyday phenomena such as vehicle motion on curved roads, rotating objects, and planetary motion.
Rotational dynamics mcqs questions on rolling motion frequently appear, testing whether students correctly apply the condition of rolling without slipping.Understanding how torque varies with radius and force direction is essential for solving banking, pulley, and disc-rotational dynamics MCQs accurately.Practicing rotational dynamics MCQs improves problem-solving speed and strengthens conceptual clarity for physics entrance examinations.
Practicing rotational dynamics MCQs helps aspirants develop speed, accuracy, and conceptual clarity required for competitive exams like NEET, JEE, and board examinations. Repeated exposure to such rotational dynamics mcqs questions strengthens problem-solving skills, reinforces formula application, and improves confidence in handling multi-step physics problems. Mastery of rotational dynamics mcqs not only supports higher-level mechanics but also builds a strong foundation for rotational dynamics and modern physics topics.
Amal Augustine is the founder of ExQuizMe, a dynamic learning and quiz platform built to make education engaging, competitive, and fun. A passionate learner and an academic achiever, Amal completed his schooling at Government HSS Manjapra, graduating with 92.5% in Computer Science. He later earned his degree from St. Stephen’s College, University of Delhi, one of India’s most prestigious arts and science institutions.
Currently, Amal is pursuing his Master’s degree at National Sun Yat-sen University, Taiwan, where he continues to deepen his interest in research and technology. Throughout his school and college years, he won 50+ national-level interschool and collegiate quiz competitions, was
Beyond academics, Amal Augustine is an avid reader of science journals, a dedicated research student, and a technology enthusiast who loves programming and exploring the world of Computer Science. Through ExQuizMe, he aims to make learning accessible, enjoyable, and empowering for students across the globe.