Question 1168959
The radius, r = 7, and the height above the ground, h0 = 1.5
The angular displacement of the person on the wheel at a time, t, is given 
by A = w*t, where w is the angular frequency
The height above the ground, h, will be given by: 
h = h0 + r(1-cos(A)) = h0 + r(1-cos(wt)).
The wheel makes 1 rev per 16s, thus w = 2*pi/16 = pi/8
If the wheel turns slower, the w will be smaller and thus the period will 
be longer, since the period, T = 2*pi/w