Answer:
0.37 W
Explanation:
e potter provide torque which then causes power developed in the wheel to rotate.
The power delivered, P is found by
[tex]P=\tau\omega[/tex] where [tex]\omega[/tex] is angular speed on the wheel and \tau is torque on the wheel
Frictional force [tex]F_{k}[/tex] developed between the hands of the potter and the wheel is given by
[tex]F_{k}=\mu F_{N}[/tex] where [tex]\mu[/tex] is coefficient of friction and [tex]F_{N}[/tex] is perpendicular force on the wheel caused by the potter’s hands
Torque on the wheel is given by
[tex]\tau=RF_{K}[/tex] where R is radius of the wheel
[tex]\tau=R\mu F_{N} [/tex]
To convert the wheel spin rate from rev/s to rads/s
[tex]\omega=\frac {12rev/s}{2\pi rev/rad}[/tex]= 1.909859 rad/s
Substituting the above \omega into the equation of power
P=[tex]\omega\tau=\omega R\mu F_{N} [/tex]
P=1.909859 rad/s *0.17m*0.1*11.3N=0.366884 W
Power delivered by the potter to the wheel is  0.37W
