Angular velocity

Find the angular velocity of the minutes arm and the second's arm of a clock. Deduce the linear speed of the trip of each arm if their lengths are 2 cm and 3 cm respectively.
Question asked by: moustafa

Asked on: 17 Jan 2011

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For minute arm,
anguler velocity=anguler displasmnt / time
=(2*pi/3600)s-1
for second arm,
anguler velocity=anguler displasmnt / time
=(2*pi/60)s-1

for minute arm,
linear spead = (anguler velocity*2)cms-1

for second arm,
linear spead = (anguler velocity*3)cms-1
By: randima
Replied at: 20 Jan 2011
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