A machinist turns on the power on to a grinding wheel at time t=0 s. The wheel accelerates uniformly from rest for 10 s and reaches the operating angular speed of 58 rad/s. The wheel is run at that angular velocity for 30 s , and then power is shut off. The wheel slows down uniformly at $1.4 \mathrm { rad } / \mathrm { s } ^ { 2 }$ until the wheel stops. What is the total number of revolutions made by the wheel in this situation?
A) 320
B) 510
C) 750
D) 470
E) 280

Question

A machinist turns on the power on to a grinding wheel at time  t=0 s. The wheel accelerates uniformly from rest for  10 s and reaches the operating angular speed of  58 rad/s. The wheel is run at that angular velocity for  30 s , and then power is shut off. The wheel slows down uniformly at $1.4 \mathrm { rad } / \mathrm { s } ^ { 2 }$ until the wheel stops. What is the total number of revolutions made by the wheel in this situation?
A) 320
B) 510
C) 750
D) 470
E) 280

Quizplus · Accepted Answer

The Answer of A machinist turns on the power on to a grinding wheel at time  t=0 s. The wheel accelerates uniformly from rest for  10 s and reaches the operating angular speed of  58 rad/s. The wheel is run at that angular velocity for  30 s , and then power is shut off. The wheel slows down uniformly at $1.4 \mathrm { rad } / \mathrm { s } ^ { 2 }$ until the wheel stops. What is the total number of revolutions made by the wheel in this situation?
A) 320
B) 510
C) 750
D) 470
E) 280

A Machinist Turns on the Power on to a Grinding 1.4rad/s21.4 \mathrm { rad } / \mathrm { s } ^ { 2 }1.4rad/s2

A Machinist Turns on the Power on to a Grinding $1.4 \mathrm { rad } / \mathrm { s } ^ { 2 }$