has a radius of 24 m and its centre is 26m above the ground. it rotates once every 60 seconds. boy get on the ferry wheel at its lowest point and then wheel starts to rotate,what is the graph for this

lowest point at t=0, so

y = -cosx
radius = 24, so
y = -24cosx
center is at y=26, so
y = 26 - 24cosx
period = 60, so 2π/k = 60
y = 26-24cos(π/30 x)