[填空题]
A person exerts a force of 55 N on th72zinht-d ;h hke ;s7ce end of a door 74 cm wid6 3o8e8tju, egymx8t oe. What is the magnitude of the torque if the for6 j xe8t88u3m,oye otgce 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
