The large blade of a helicopter is rotating in a horizontal circle. The length of the...
The large blade of a helicopter is rotating in a horizontal circle. The length of the blade is 7.91 m, measured from its tip to the center of the circle. Find the ratio of the centripetal acceleration at the end of the blade to that which exists at a point located 5.48 m from the center of the circle.
Homework Answers
The expression for centripetal acceleration is given by
and this has the direction opposite to the radius vector r.
To find the ratio of centripetal acceleration at r1 = 7.91 and r2 = 5.48
as the blade rotates at the same rate (blade is a rigid body) , angular velocity remains the same
Hence,
Hence 1.44 is the answer
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