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Answer on Trigonometry Question for janedie

Question #5267
an object is rotating on a circular path at 4 revolutions per minute. the linear velocity of the object is 400 feet per minute. what is the radius of the circle and what is the angular velocity of the rotating platform?
Expert's answer
T=60/4=15 -- period
n=1/T=0.0666 -- frequency
L=400/4=100 --length of range
L=2*pi*R
R=L/(2*pi)=100/6.28=15.92 -- radius
w=2*pi*0.0666=6.28*0.066=4.18248 -- angular velocity

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