The 1.50-cm-long second hand on a watch rotates smoothly.
A)What is its angular velocity?
b)What is the speed of the tip of the hand?
a) angular velocity = 2pi/60 = 0.104 rad/s
b) from
v = rW = 1.50*10^-2* 0.104 = 1.57 x 10^-3 m/s
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