[填空题]
A person exerts a force fp kds5ef0ph* o ;v6:cof 55 m,ci) .l i.knl4fp7*jgc2na xN on the end of a door 74 cm wide. What is the magnitude of the torque if the force is e*nnl7x2.ap )gc i4cfl,j.mikxerted (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
