A flat belt wraps around two pulleys, A and B, with radii of 30 cm and 10 cm , respectively. The angle between the belt and the horizontal is 20 degrees at the pulleys. Pulley B rotates clockwise and drives Pulley A, causing tension T2 at one end of the belt and tension T1 at the other. Given that the maximum allowable tension T2 is 1000 N and the coefficient of static friction between the belt and pulleys is 0.4, what is the maximum moment on pulley A? The belt-to-surface contact angle, calculated from the system's geometry, is 140 degrees. The belt-to-surface contact angle in radians and the coefficient of static friction values are substituted into the expression for belt tensions to obtain T1. As pulley B rotates clockwise, a tension difference created at pulley B generates a moment at pulley A. A free-body diagram for pulley A is drawn, and the moment equilibrium condition is applied. The radius and tension values are substituted to obtain the maximum moment.