The ratio of angular speed of a second-hand to the hour-hand of a watch is

Step-by-step solution

For second-hand, t=60 ~s So, angular speed = 2 60 For hour-hand, t =12 hour =12 60 60 ~s So, angular speed, ^ = 2 12 60 60 Then ratio ^ = 2 60 2 12 60 60 =12 60=720 Therefore, ratio of angular speed of a second-hand to the hour-hand of a watch is 720: 1