While a steel shaft of the cross-section shown rotates at 120 rpm, a stroboscopic measurement indicates that the angle of twist is 2° in a 3.6-m length. Using G = 77GPa , determine the power being transmitted.

While a steel shaft of the cross-section shown rotates at 120 rpm, a stroboscopic measurement indicates that the angle of twist is 2° in a 3.6-m length. Using G class=

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