## Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (3rd Edition)

$\tau_{net} = 0.40~N~m$
We can find the magnitude of the net torque on the disk. $\tau_{net} = \sum \tau$ $\tau_{net} = r_1~F_1 - r_2~F_2$ $\tau_{net} = (0.040~m)(30~N)-(0.040~m)(20~N)$ $\tau_{net} = 0.40~N~m$