What couple must be applied to a wire one meter long,1mm in diameter in order to twist one end of it, through 90 degree, the other end remaining fixed ...
What couple must be applied to a wire one meter long,1mm in diameter in order to twist one end of it, through 90 degree, the other end remaining fixed? Rigidity of material of the wire is 2.8×10^-11N/m^2
(ans:43.19×10^-4Nm)
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