[填空题]
A person exerts a forcebf(pe nw;7 a*c of 55 N on the eenype+f *(en* 6 3 xgy/dveg7knd of a door 74 cm wide. What is the magnitude of the tove 3 yfex(ee g/p*y7 nd*nk+6grque 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
