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In Fig., find the resultant magnetic for...

In Fig., find the resultant magnetic force and torque about C, and P.

Text Solution

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`vecF_(n et) =I2RB` . The wire is equivalent to
Forces on each element is radially outward, `tau_C=0`
Torque about point `P=tau_p=int_0^pi[I(R d thetaB sin 90^@] R sin theta`
`=2IBR^2`
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