Sinusoidal function help?

hey, how do you find the phase shift in a sinusoidal function?

also, I'm given a word problem and i cant figure out what c is. I also cant figure out what the phase and vertical shifts are in this problem

this is the word problem:

A carnival Ferris wheel with a radius of 7 m makes one complete revolution every 16 seconds. The bottom of the wheel is 1.5 m above the ground. The ride starts at the bottom. Find the sinusoidal function that models this Ferris wheel in terms of time (t) in seconds.