A mass m₁ = 5.5 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m₂ = 2.36kg which hangs freely from the string. When released, the hanging mass falls a distance d = 0.72 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) The work done by tension on only m₂ is:

positive

zero

negative

7) What is the NET work done on m₂?

 

m. m2