Question

The minute hand of a clock is 10.5 cm long. What is the speed and average velocity of its tip in an interval of 10 minutes?

Answer 1

Dear student

$$\begin{gathered} Dis\tan cemovedin60minuteis=2\pi \times 10.5cm \\ Dis\tan cemovedin10minuteis=\frac{2\pi \times 10.5}{60}\times 10=\frac{2\pi \times 10.5}{6}=10.99cm=11cm \\ averagespeed \\ v=\frac{dis\tan ce}{time}=\frac{11cm}{10\times 60}=0.018cm/sec \\ displacementis=Radius=lengthofminutehand=10.5cm \\ averagevelocityv=\frac{10.5cm}{600sec}=0.0175cm/sec \\ Regards \end{gathered}$$