SOLVED: The blades on the windmill turn once every second. The length of each blade is 3.5 m, and the tips of the blades are 8 m off of the ground when they are at their lowest point.Use a sinusoidal function to model the height above the ground of one of the blade tips as a function of time. Include a sketch of the function with your solution. (5 marks)What is the height of the blade at 1.5 minutes? (1 mark)

A Dutch windmill has blades that are 20 m in length, and the centre of their circular motion is a point 23 m above the ground. The blades have a frequency of 4 revolutions per minute when in operation.a) Graph the function over two complete cycles. Be sure to label your axis for full marks.b) Use a sinusoidal function to model the height above the ground of the tip of one blade as a function of time.c) At what time(s) is the tip of the blade 34m above the ground during the first revolution?

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