Answer :
The grinding wheel's angular momentum and the torque needed to halt the wheel are 11.25 kg/m2/s2.
Utilized idea?
The system may experience angular displacement due to the torque. The percentage change in angular momentum over time can be used to calculate the torque.
Why do we do it?
The following equation represents the grinding wheel's angular momentum: L=I L=(1/2mR2)(2rad/60N)
Change the values in the equation above.
L = (1/2) 4.2 32 10-2 (2 rad/60 1600) = 11.25 kg m2.s
The following is the equation for the torque necessary to stop the wheel:
T= L-L'/t L-L'/t
The final angular momentum, L', has a value of zero in this situation.
Change the values in the equation above.
= 11.25/6= 1.875Kg m²/s²
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