Astronauts use a centrifuge to simulate the acceleration of a rocket launch. The

Question

Astronauts use a centrifuge to simulate the acceleration of a rocket launch. The centrifuge takes 30.0 s to speed up from rest to its top speed of 1 rotation every 1.20 s . The astronaut is strapped into a seat 7.00 m from the axis.

Part A

What is the astronaut's tangential acceleration during the first 30.0 s ?

Express your answer with the appropriate units.

Part B

How many g's of acceleration does the astronaut experience when the device is rotating at top speed? Each 9.80 m/s 2   of acceleration is 1 g.

Express your answer with the appropriate units.

Explanation / Answer

v = (2 pi r)/1.2 = 2*3.14*7/1.2 = 36.63 m/s

v= u + at

36.63 = 0 + a*30

=> tangential acc = 1.22m/s2

B)

Now centripital acc. = V2/r = 191.6 m/s^2

Net acc = (a1*a1 +a2*a2)1/2

Net acc = 191.7 m/s^2 = approx 20 g's of acc.

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