A. Express your answer in radians. B. At what time does the wheel stop? Express

Question

A. Express your answer in radians. B. At what time does the wheel stop? Express your answer inseconds.
C. What was the wheel's angular acceleration asit slowed down? Express your answer in radians persecond per second. At what time does the wheel stop? Express your answer inseconds.
C. What was the wheel's angular acceleration asit slowed down? Express your answer in radians persecond per second. What was the wheel's angular acceleration asit slowed down? Express your answer in radians persecond per second.

Explanation / Answer

A. they tell you it traveled 435 while slowing down, soyou only need to figure out how far it traveled whilespeeding up. .      at t=0   speed =29.0          at t = 1.70     speed = 29.0 +1.70*32.0 = 83.4 .          avgspeed = (29.0 + 83.4)/2 =   56.2rad/s .    distance while speeding up = avg speed *time = 56.2 * 1.70 = 95.54 rad .     total distance = 95.54 +435 =  530.54 radians . B.   avg speed while slowing downis    (83.4 + 0)/2 =   41.7rad/s .    time to stop = distance / avg speed =435 / 41.7 =   10.43 seconds . So it stops at time   1.70 + 10.43  =   12.13seconds . C. angular acc = change in speed / time = (0 - 83.4) / 10.43 =     -8.00rad/s2

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