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a) State the amplitude and period.

b) What are the maximum and minimum heights of the piston?

c) How many complete cycles does the piston make in 30 min?

My answers:

ai) amplitude = 120cm

aii) period = 2Pi / Pi = 2

bi) minimum height = 200cm - 120cm = 80cm

bii) maximum height = 200cm + 120cm = 320cm

c) 30m = 1800s

period = 2 cycles / s

1800 x 2 = 3600

Therefore the piston makes 3600 complete cycles in 30 minutes.

I was hoping that someone could tell me if my answers are correct? I want to make sure that I understand this properly. Thanks :)