2pir subtends an angle of
Correct answer: D. 2*pi radians
- A. 1 radian
- B. 2 radians
- C. 4 radians
- D. 2*pi radians
Explanation
The formula for calculating the angle subtended by an arc in radians is given by θ=s/r , where s is the length of the arc and r is the radius. In this case, the length of the arc is 2πr and the radius is r. So, θ=2πr/r =2π radians.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Angular Displacement
Angular displacement measures the change in a body’s angular position and is expressed in radians or degrees, with anticlockwise and clockwise directions assigned signs. It connects to arc length, angular velocity and angular acceleration, and must be distinguished from ordinary linear displacement in rotational motion.
Practise Rotational and Circular Motion
521 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 Displacement questions
The angle subtended by an arc equal to the radius is
The angle subtended by an arc equal to the radius is
A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is \( R \), the total angular displacement covered is
The angular velocity of a wheel increases from 100 rps to 300 rps in 10 seconds. The number of revolutions made during that time is
For a small theta, angular displacement is a quantity
For a positive angular displacement, the rotation would be