Professor Brown holds on to the end of the Second hand of a clock atop city hall. If the second hand is 5.5m long, what is the professor’s centripetal acceleration? Remember that time = 60 seconds, radius = 5.5 m  Solve for velocity first, then use that to calculate acceleration.  A. 2.4 m/s2 B. 1.3 m/s2 C. .06 m/s

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A: Gravity provide the necessary centripetal force

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.