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Asked in UHS MDCAT 2022 2022

If a flywheel is rotating at 3.0 rad/s, the time it takes to complete one revolution is

Correct answer: D. 2.1 s

  • 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 that the flywheel is rotating at 3 rad/s, we can substitute this value into the formula: Time = (2π radians) / (3 rad/s) Time = 2.1 seconds

This question appeared on the UHS MDCAT 2022 paper, which you can sit online with every answer explained.

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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.

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