Helicopter blades withstand tremendous stresses. In addition to supporting the weight of a helicopter, they are spun at rapid rates and experience large centripetal accelerations, especially at the tip. (For each answer, enter a number.) a) Calculate the magnitude (in m/s2) of the centripetal acceleration at the tip of a 3.90 m long helicopter blade that rotates at 345 rev/min. b) Compare the linear speed of the tip with the speed of sound (taken to be 340 m/s). v tip / v sound = ?

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.