Answer to Question #168732 in Physics for Pushpo

Question #168732

Calculate the twisting couple of a hollow cylinder.

Expert's answer

For a hollow cylinder of the same length land ofinner radius r₁ and outer radius r₂, Twisting couple of the cylinder

"C=\\int_{r_1}^{r_2}\\frac{2\\pi N\\theta }{l}x^3dx\\\\\nC=\\frac{\\pi N\\theta}{2l}(r_2^4-r_1^4)"

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