Allow me to repeat the previous question,regarding two situations ◎ below. Two situations ◎ can be explainend qualitatively and quantitatively using formulas based on Newton’s laws of motion. The question is, can equivalence principle explain these also ? Is there anyone who can ? .
◎ Forces of the same magnitude are acting on a mass point from the left and right directions. Types of forces are tension, gravity, and inertial force. Since there are no combinations of inertial forces and inertial forces, there are five combinations of forces (ignoring the difference between left and right).
◎ A body is sliding down inclined surface (no friction).
