free body diagram(В источнике: Khan academy > Physics > Forces and Newton's laws of motion > Normal force and contact force > What is normal force > [в объяснении: "Why didn't we draw the forces directed into the dot?"], сказано: "The typical convention when drawing force diagrams (i.e. free body diagrams) is to draw all forces emanating from the center of the dot (which represents the object in question) as opposed to being directed toward the dot.", поэтому: free body diagram = force diagram = силовая схема. 2022017temporary)
