[填空题]
A person exerts a forco0d kguiy; 24ir5.y zwe of 55 N on the end of a door 74 cibiu1-v -zc: c*a; yhdm wide. What is the magnitude of the tod-*iib -zyh :cvua; 1crque 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
