sarahf2468 sarahf2468

26-02-2016
Physics

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The 5.50 cm long second hand on a watch rotates smoothly. What is its angular velocity? What is the speed of the tip of the hand?

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Willchemistry Willchemistry

26-02-2016

Angular velocity w = angle(radians) / time(sec)

W = 2 π / 60

W = 0.105 rad/sec

V speed :

W * r = 0.105 * 5.50

V speed = 0.5775 cm/sec

hope this helps!

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