Question

the length of seconds hand of a watch is 1.5 CM calculate the speed of the tip of second of the watchi will mark the first to answer correct and also thank him/her surely​

Answer 1

Answer:

The speed of he tip of the second's hand is 1.57 × 10^-3 m/s

Explanation:

Second's hand completes one revolution in 60 seconds.

Thus time period T = 60 seconds

Angular velocity = 2p/T = 2× 3.14/60 = 0.105 radian/sec

Length of the second's hand R = 1.5 cm

= 0.015 m

Therefore, radial velocity of the second's hand=

{v=R*omega}

v=Rω

or, v = 0.015 × 0.105 m/s

= 1.57 × 10³ m/s