Current round Cone!

A cone ((mass mm, radius RR, and height h)h) has a current II flowing uniformly along its curved surface area. This cone is kept on a rough surface in a magnetic field B=B0i^\vec{B} = B_{0} \hat{i}.

If the maximum value of current such that the cone doesn't topple about point PP is nmgπB0R,\dfrac{nmg}{\pi B_{0} R}, determine the value of nn.

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