Question: A linear torsional spring deforms such that an applied couple moment M is related to the springs rotation u in radians by the equation M

A linear torsional spring deforms such that an applied couple moment M is related to the spring’s rotation u in radians by the equation M = (20 u) N # m. If such a spring is attached to the end of a pin-connected uniform 10-kg rod, determine the angle u for equilibrium. The spring is undeformed when θ = 0° .

A M = (20 0) N m

A M = (20 0) N m "0.5 m

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