A machinist turns the power on to a grinding wheel, which is at rest at time t = 0.00 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 25 rad/s. The wheel is run at that angular velocity for 37 s and then power is shut off. The wheel decelerates uniformly at 1.5 rad/s2 until the wheel stops. In this situation, the time interval of angular deceleration (slowing down) is closest to: A machinist turns the power on to a grinding wheel, which is at rest at time t = 0.00 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 25 rad/s. The wheel is run at that angular velocity for 37 s and then power is shut off. The wheel decelerates uniformly at 1.5 rad/s2 until the wheel stops. In this situation, the time interval of angular deceleration (slowing down) is closest to:.
a) 19 s
b) 17 s
c) 21 s
d) 23 s
e) 15 s
Answers: 3
(1)
- Initial angular velocity, in radians per second. 
- Final angular velocity, in radians per second.
- Angular acceleration, in radians per square second.
- Time, in seconds. 
, 
and 
, then the time taken by the grinding wheel to stop:
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A machinist turns the power on to a grinding wheel, which is at rest at time t = 0.00 s. The wheel a...
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