Question

Q.4 Calculate the speed of the tip of the second‟s hand of the watch of

length 1.5cm.
plese give answer fast please I need this ​

Answer 1

We know -


V = r w. [w is the angular velocity]



V = 0.015w

W = radians covered per unit time
Second hand covers
2(pi) radians in 1 minute
Therefore 2(pi)/60 radians in 1 second

Putting in earlier equation




V = (0.015)*2pi/60
V = pi/2000 m/s
Or pi/20 cm/s