Harmonic Motion

3.) The wheel in a piston linkage (like example 1) has a radius of 6 in. It turns with an angular velocity of 1611 rad/sec. The initial position is the same as example 1. a.) What is the frequency of the piston? b.) What equation models the motion of the piston? c.) What is the distance from the initial position 2.85 sec after starting? 4.) A point on the tip of a tuning fork vibrates in harmonic motion described by the equation of = 14 sin(wt). Find cu for a tuning fork that has frequency of 528 vibrations per second