A torque of 50 Nm is applied to a grinding wheel with moment of inertia 20 kg m2 for 10 s. If it starts from rest, what is the a
ngular velocity of the wheel after the torque is removed?
1 answer:
Answer:
Final angular velocity, 
Explanation:
Given that,
Torque, 
Moment of inertia, 
Time, t = 10 s
Initial angular velocity, 
The relation between the torque and the moment of inertia is :

is the angular acceleration



Using first equation of kinematics to find the final angular velocity of the wheel. It is given by :



So, the final angular velocity of the wheel is 25 rad/s. Hence, this is the required solution.
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