Calculate the value of the angular acceleration of the machine using the given data: J = .541 kg-m^2, load torque = 10 N-m, motor torque = 2 N-m.(a) 45 rad/s^2(b) The machine will fail to start(c) 30 rad/s^2(d) 51 rad/s^2I have been asked this question in exam.My doubt stems from Motors Rating and Heating topic in section Rating and Heating of Motors of Electric Drives

Calculate the value of the angular acceleration of the machine using t

1.	Calculate the value of the angular acceleration of the machine using the given data: J = .541 kg-m^2, load torque = 10 N-m, motor torque = 2 N-m.(a) 45 rad/s^2(b) The machine will fail to start(c) 30 rad/s^2(d) 51 rad/s^2I have been asked this question in exam.My doubt stems from Motors Rating and Heating topic in section Rating and Heating of Motors of Electric Drives
Answer» Correct choice is (b) The machine will FAIL to START Explanation: Using the dynamic equation of MOTOR J×(ANGULAR ACCELERATION) = Motor torque – Load torque: .541×(angular acceleration) = 2-10=-8, angular acceleration=-14.78 rad/s^2. The load torque is greater than the motor torque. The motor will fail to start.

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