Free Angular Velocity MCQs with Answers
105 Angular Velocity MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Angular velocity describes how quickly angular displacement changes with time, with ω = Δθ/Δt and units of radians per second. Questions relate angular and linear motion through v = rω, use the direction given by the right hand rule, and distinguish angular velocity from angular acceleration and ordinary frequency.
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105 questions · page 5 of 6
- A. 0.5π Hz
- B. 2π Hz
- C. 0.5 Hz
- D. 2 Hz
Explanation: Frequency is number of revolutions per second, so frequency = revolution / time Frequency = 6/3 = 2 Hz
Correct answer: 2 Hz- A. 5.24 rad/sec^2
- B. 6 rad/sec^2
- C. 10 rad/sec^2
- D. None of these
Explanation: Angular Acceleration = t, Where = change in angular velocity t = change in time First we convert from rpm rads-1 250 rpm = 250 2 / 60 =…
Correct answer: 5.24 rad/sec^2- A. Positive
- B. Negative
- C. Zero
- D. Infinite
Explanation: The direction of angular velocity is determined by right hand rule. According to right hand rule, if you hold the axis with your right…
Correct answer: Positive- A. Angular displacement
- B. Angular acceleration
- C. Angular frequency
- D. None of these
Explanation: Angular Velocity is defined as the rate of change of angle with respect to time, leading to the equation 𝜔=Δ𝜃/Δ𝑡, where 𝜃 is the angle…
Correct answer: Angular frequency- A. Zero
- B. Negative
- C. Infinite
- D. Linear
Explanation: Angular velocity can be zero when an object is stationary. Angular velocity can be negative when an object is moving clockwise or when the…
Correct answer: Infinite- A. Instantaneous velocity
- B. Rotational velocity
- C. Tangential velocity
- D. Linear velocity
Explanation: B. Angular velocity is the rotational analog of velocity. The velocity that keeps a body within a circle during circular motion is known…
Correct answer: Rotational velocity- A. π
- B. 3π
- C. 6π
- D. 12π
Explanation: One revolution is equal to 2π radians. Therefore, the angle turned through 1 second is:360 revolutions/minute x 2π radians/revolution x 1…
Correct answer: 12π- A. Time period
- B. Frequency
- C. Vibration
- D. None of these
Explanation: Option B is correct since there exists a direct relationship between angular velocity and frequency and it is given by the following…
Correct answer: Frequency- A. Angular displacement
- B. Angular acceleration
- C. Angular velocity
- D. Acceleration
Explanation: B. Angular acceleration is the rotational analogue of linear acceleration.
Correct answer: Angular acceleration90. If a car moves with a uniform speed of 2 ms^-1 in a circle of radius 0.4, its angular speed is _.
- A. 4 rads^-1
- B. 5 rads^-1
- C. 1.6 rads^-1
- D. 2.8 rads^-1
Explanation: The given data is; Speed, v = 2m/s Radius, r = 0.4m Angular speed, w, is required.
Correct answer: 5 rads^-1- A. π rad/s2
- B. 9π rad/s2
- C. 8π rad/s2
- D. None of these
Explanation: Correct Option: A The initial angular velocity (ωi) is given as 900 cycles/min.
Correct answer: π rad/s2- A. 1.4 x 10^-4 rads-1
- B. 1 x 10^-3 rads-1
- C. 5.2 x 10^-3 rads-1
- D. 1.7 x 10^-3 rads-1
Explanation: Correct Option:CAngular velocity, time rate at which an object rotates, or revolves, about an axis, or at which the angular displacement…
Correct answer: 5.2 x 10^-3 rads-1- A. Positive
- B. Negative
- C. Zero
- D. Infinite
Explanation: By convention, anticlockwise movement is considered positive angular velocity and clockwise rotation is considered negative angular…
Correct answer: Negative- A. Positive
- B. Negative
- C. Zero
- D. Infinite
Explanation: By convention, anticlockwise movement is given a positive sign and clockwise rotation is given a negative sign.
Correct answer: Negative- A. 3600:1
- B. 60:1
- C. 24:1
- D. 12:1
Explanation: d) 12:1: This option is correct. The ratio of angular speed of the minute hand of the clock to that of its hour hand is 12:1.
Correct answer: 12:1- A. Zero
- B. Clockwise
- C. Maximum
- D. Remains the same
Explanation: Explanation:If the body is rotating with uniform angular velocity, its angular momentum remains constant, and therefore there is no change…
Correct answer: Zero- A. 0.67s
- B. 10. s
- C. 1.3s
- D. 2.1 s
Explanation: To find the time it takes for a flywheel to complete one revolution, we can use the formula: Time = (2π radians) / Angular velocity Given…
Correct answer: 2.1 s- A. Velocity and acceleration are antiparallel
- B. Velocity and acceleration are parallel
- C. Velocity and acceleration are perpendiculars
- D. Zero acceleration
Explanation: The correct option is C, "Velocity and acceleration are perpendicular." This option is correct.
Correct answer: Velocity and acceleration are perpendiculars- A. Decrease
- B. Increase
- C. Remain the same
- D. First increase and then decrease
Explanation: According to conservation of Angular Momentum, Iω = constant Hence, when the girl sitting on a bar stool suddenly spreads her hands, then…
Correct answer: Decrease- A. decrease
- B. increase
- C. Remain the same
- D. first increase and then decrease
Explanation: The moment of inertia of girl increases (since the mass of her legs is now farther from the axis of rotation).
Correct answer: decrease