# physics

posted by
**Christina** on
.

A light rope is attached to a block with a mass of 6 kg that rests on a horizontal, frictionless surface. THe horizontal rope passes over a frictionless, massless pulley, and a block of mass m is suspended from the other end. When the blocks are released, the tension in the rope is 18 N. a) what is the acceleration of the 6 kg block ? b) the mass m of the hanging block?

a) is 3 m/s

b) is 2.65 kg

I don't get the equations I should have used

YOU SHOULD USE THE EQUATION WHICH IS LETTER B.