A mass m₁ = 4.3 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m₂ = 3.4 kg which hangs freely from the string. When released, the hanging mass falls a distance d = 0.87 m. 

1) How much work is done by gravity on the two block system?

 2) How much work is done by the normal force on m₁?

3) What is the final speed of the two blocks?

4) How much work is done by tension on m₁?

5) What is the tension in the string as the block falls?

6) What is the NET work done on m₂?