Question

If the lenght of second'hand of a clock is 10 cm the speed of its dip is nearly ?

Answer 1

Answer:

π/300 m/s or π/3 cm/s

Explanation:

Length of second hand : 10cm = 0.1 m

The second hand completes one full circle in 60s

Now; Angular speed (ω) = (2πn) / time taken where n is no.of rotations and t is time taken

Hence ω = 2π/60 = π/30 radians/sec

and speed = angular speed × Radius

Hence speed = π/30 × 0.1 = π/300 m/s