[填空题]
A person exerts a forc 4k:tvf el90f3fjnsy0e of 5 ppit0r0ml7n+ w*.ovc5 N on the end of a door 74 cm wide. What is the magnitude of the torque if the force is exemo0 t np +iv07r.cpw*lrted (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
