Asked in PMC Practice Test 25 (2021) 2021

Angular velocity cannot be?

Correct answer: C. Infinite

  • 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 angular displacement is decreasing. Angular velocity CAN NOT be "infinite". According to the formula, angular velocity is equal to v/r and for angular velocity to be "infinite radius" it has to be zero. Which is not possible. Angular velocity can also be 'equal' to the linear velocity if the radius was 1 meter according to the formula angular velocity=v/r

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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

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