The angular speed of the minute hand of a clock in degrees per second is

The angular speed of the minute hand of a clock in degrees per second is
  1. $0 \cdot 01$
  2. $0 \cdot 1$
  3. 1
  4. 10

Solution

The minute hand, in one hour \((=3600 \mathrm{~s})\) completes a full \(360^{\circ}\) rotation.
So its angular speed is given by:
\(\omega=\frac{\Delta \theta}{\Delta t}=\frac{360^{\circ}}{3600 \mathrm{~s}}=0.1^{\circ} \mathrm{s}^{-1}\)

Asked in: MHT CET 2020 (14 Oct Shift 1)

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