[填空题]
A person exerts a fori js :6gk/xr/, ihhn ng+08hhsce of 55 N on the end of a door 74 cm wide. Wh+1kk mzhom++ lrvs7p1at is the magnitude of t1lpoz+m1s vkk7hm++r he torque if the force is exerted (a) perpendicular to the door $m \cdot N$ (b) at a 45 $^{\circ} $ angle to the face of the door? $m \cdot N$
Post time 2025-2-18 20:00:22
