There is a box resting on a table connected to a second box hanging off the edge of the table by a string that is run through a pulley. The mass of the first box is 3.50 kg. and The mass of the second box is 2.8 kg. What is the tension in the string connecting the two boxes and is it , or = to the mass of the second bad times gravity (mg)?

Question

There is a box resting on a table connected to a second box hanging off the edge of the table by a string that is run through a pulley. The mass of the first box is 3.50 kg. and The mass of the second box is 2.8 kg. What is the tension in the string connecting the two boxes and is it <,>, or = to the mass of the second bad times gravity (mg)?

I found that the tension in the string is 15.3 N, and mg= 27.5 N. So T < mg.

Now I have to find the velocity of the second box right before it hits the ground if the ground is .5 m below the bottom of the second box at the beginning. Help please.