What does a massless pulley mean?
What does a massless pulley mean? MASSLESS PULLEY means that no rotational inertia exists, and thus no force can alter the tension of the string (?) What happens if the pulley has mass? Because the pulley possesses mass, you need to apply a non-zero net torque to it to increase its angular acceleration (assuming that is the goal here). If the tensions were the same on both sides of the contact point between the string and the pulley, there would be no angular acceleration. Is pulley massless and frictionless? Strings and spring are ideal. If the string is taut during...