Chapter 1, Problem 25P

For Problems15−28, perform the indicated conversion of units. (Refer to Appendix 16 for conversion factors.) Express the results with the appropriate prefix as illustrated in Tables1−3 and 1−4.

25. A torsional spring requires a torque of  $180\text{ lb}\cdot \text{in}$ to rotate it $35°$ . Convert the torque to  $\text{N}\cdot \text{m}$  and the rotation to radians. If the scale of the spring is defined as the applied torque per unit of angular rotation, compute the spring scale in both unit systems.