Suppose a small object at 3.72cm from the axis of a phonograph turntable which operates at 22.8 rev/min.
i) Suppose the object doesn’t slip, then what is the acceleration in cm/s^2?
ii) Find out the minimum coefficient of friction between the object and the turntable?
iii) Assume that the turntable achieved its angular speed by beginning from rest and undergoing a constant angular acceleration for 0.345s. Compute the minimum coefficient of static friction needed for the object not to slip throughout the startup period.