[填空题]
Calculate the net togwqv8 )3+u+lywt*lpl+dj/ eh rque about u2lxgk//h+pl g5 0uspw8lx da-5/c psthe axle of the wheel shown in Fig. 8–39. Assume that a friction torque of /d 0w plg/g 2px sk/ 5us8alxhcul+-5p0.4 $m \cdot N$ opposes the motion. $m \cdot N$