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8i. 8. SITUATIONAL QUESTION At t = 0, a grinding wheel has an angular velocity of 25 rad/s. It has a constant angular acceleration of 32 rad/s2 until a circuit breaker trips at t = 2.5 seconds. From then on, it turns through 423 rad as it coasts to a stop at constant angular acceleration. Through what total angle did the wheel turn between t=0 and the time it stopped? a. 108rad b. 540rad c. 114rad d. 537rad At what time did it stop? a. 12.186 s b. 10.186 s c. 11.506 s 8ii.

8i. 8. SITUATIONAL QUESTION At t = 0, a grinding wheel has an angular velocity of 25 rad/s. It has a constant angular acceleration of 32 rad/s2 until a circuit breaker trips at t = 2.5 seconds. From then on, it turns through 423 rad as it coasts to a stop at constant angular acceleration. Through what total angle did the wheel turn between t=0 and the time it stopped? a. 108rad b. 540rad c. 114rad d. 537rad At what time did it stop? a. 12.186 s b. 10.186 s c. 11.506 s 8ii.

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8. SITUATIONAL QUESTION At t = 0, a grinding wheel has an angular velocity of 25 rad/s. It has a constant angular acceleration of 32 rad/s2 until a circuit breaker trips at t = 2.5 seconds. From then on, it turns through 423 rad as it coasts to a stop at constant angular acceleration. Through what total angle did the wheel turn between t=0 and the time it stopped? a. 108rad b. 540rad c. 114rad d. 537rad At what time did it stop? a. 12.186 s b. 10.186 s c. 11.506 s d. 9.506 s A carousel is initially at rest. At t = 0, it is given a constant angular acceleration a 0.058 rad/s2, which increases its angular velocity for 9.0 s. At t = 9 s, determine the total acceleration of a child 3.5m from the center of the carousel. a. 0.975 m/s2 b. 0.954 m/s2 c. 0.957 m/s2 d. 0.945 m/s2 8i. 8ii. 8iii.
Transcribed Image Text:8. SITUATIONAL QUESTION At t = 0, a grinding wheel has an angular velocity of 25 rad/s. It has a constant angular acceleration of 32 rad/s2 until a circuit breaker trips at t = 2.5 seconds. From then on, it turns through 423 rad as it coasts to a stop at constant angular acceleration. Through what total angle did the wheel turn between t=0 and the time it stopped? a. 108rad b. 540rad c. 114rad d. 537rad At what time did it stop? a. 12.186 s b. 10.186 s c. 11.506 s d. 9.506 s A carousel is initially at rest. At t = 0, it is given a constant angular acceleration a 0.058 rad/s2, which increases its angular velocity for 9.0 s. At t = 9 s, determine the total acceleration of a child 3.5m from the center of the carousel. a. 0.975 m/s2 b. 0.954 m/s2 c. 0.957 m/s2 d. 0.945 m/s2 8i. 8ii. 8iii.
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