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 The wheel is run at that angular velocity for 37 s and then power is shut off. The wheel decelerates uniformly at until the wheel stops. In this situation, the time interval of angular deceleration (slowing down) is closest to:
A) 17 s
B) 15 s
C) 19 s
D) 21 s
E) 23 s

Question

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  The wheel is run at that angular velocity for 37 s and then power is shut off. The wheel decelerates uniformly at  until the wheel stops. In this situation, the time interval of angular deceleration (slowing down) is closest to:
A) 17 s 
B) 15 s 
C) 19 s 
D) 21 s 
E) 23 s

Quizplus · Accepted Answer

The Answer of 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  The wheel is run at that angular velocity for 37 s and then power is shut off. The wheel decelerates uniformly at  until the wheel stops. In this situation, the time interval of angular deceleration (slowing down) is closest to:
A) 17 s 
B) 15 s 
C) 19 s 
D) 21 s 
E) 23 s

A Machinist Turns the Power on to a Grinding Wheel