Question

1. A Ferries wheel is 35 meters in diameter and boarded at ground level. The wheel completes one full revolution every 5 minutes. At ? = 0 you are in the 3 o’clock position and ascending. Find aformula, using the sine function, for your height above the ground after ? minutes on the Ferries wheel.

2. The pressure, ? (in ???/??2), in a pipe varies over time. Five times an hour, the pressure oscillates from a low of 90 to a high of 230 and then back to a low 90. The pressure at ? = 0 is 90.

   1. Find a possible formula for ? = ?(?).

   2. By graphing ? = ?(?) for ? ≤ ? ≤ 2, estimate when the pressure first equals

      115 ???/??2

Answer 1