Two hanging masses are connected by ropes to a 20 kg mass which sits on a frictionless table. Find the following quantities: masses at the end of the rope are 5 and 7 kg, one weight on each end.
a) The amount of unbalanced force acting on the masses,
b) The acceleration of the masses,
c) The tensions in the two ropes (call them TLeft and Tright)
d) The time it will take the mass on the right to drop 1.5 m.
e) How would your approach to the problem change if there was friction between the 20 kg mass and the table?