If a car moves with a uniform speed of 2 m/s in a circle of radius 0.4 m, its angular speed is
Correct answer: B. 5 rad/s
- A. 4 rad/s
- B. 5 rad/s
- C. 1.5 rad/s
- D. 2.8 rad/s
Explanation
Reason: The angular speed ( omega ) is related to linear speed ( v ) by the equation omega = v/r. Substituting the given values, omega = 2 m/s/0.4m}} = 5 rad/s.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Angular Velocity
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.
Practise Rotational and Circular Motion
522 free Rotational and Circular Motion MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Angular Velocity questions
The angular speed of the hour's hand of a mechanical watch is --- radian per hour
The period of circular motion is given by
Ten seconds after an electric fan is turned on, the fan rotates at 300 rev/min. Its average angular acceleration is
Angular speed of the second's hand of a watch in rads⁻¹
The angular speed of the hour hand of a mechanical watch is ----- radians per hour
The SI unit of angular acceleration is: