1. The problem statement, all variables and given/known data It was on my test yesterday. There is a 10kg block on an incline of 45degrees connected by a string to another block hanging over the side of the incline by a frictionless massless pulley. Kinetic friction on the block on the incline is mu=0.5 The block that is hanging over the edge is 10kg. Assume g=10 m/s^2 (a) Find the acceleration of the blocks. (b) Find the tension in the string (c) If the hanging block descends by 1 m, what is the work done by friction? 2. Relevant equations F=ma Fgxdirection= sin45*mg forceoffriction= .5 * mgcos45 SumFhangingblock= T-mg=ma SumFinclineblock=T-sin45*mg-.5*cos45*mg 3. The attempt at a solution I used the two sumF equations i wrote up there ^^ to find "a", but I got -6.07m/s^2. But negative looks wrong to me. Then I plugged that into one of the sumF equations to get T. I think i got 44.5 N Then for the work done by friction I multiplied the force of friction by 1m since the block should slide one meter when the hanging block descends one meter. I'm not sure if I'm right, if not can someone help me out?