In this simulation the masses will move if the tension in the string is greater than the frictional forces on the masses on the table.
Fill in the masses (0 to 20kg ) and the coefficient of friction. Press Submit in each case.
Observe the tensions in the strings and the friction forces (yellow lines). Press "Release Masses". Observe the drop in the tension if the masses move. The drop is due to
the fact that, as the masses on the table begin to move, they no longer exert the same force on the string. The hanging mass is still pulled by
the same force of gravity as before but the masses on the table are not able to hold the same tension in the string.
Calculate the acceleration of the system yourself and the tensions in the strings.
To check your answers click on the Show Answers button.