Question

The speed of the tip of the minute hand on a
town clock is 0.00136 m/s.

(a)What is the speed of the tip of the second
hand of the same length?
Answer in units of m/s.

(b)What is the centripetal acceleration of the tip
of the second hand?
Answer in units of m/s2

Answer 1

60 times as fast

2 pi r in 60 seconds is the speed which we got in part a
so we can solve for r
then
Ac = v^2/r