Two blocks are connected by a very light string passing over a massless and frictionless pulley. The 20.0-N block moves 75.0 cm to the right and the 12.0-N block moves 75.0 cm downward.
1. Find the total work done on 20.0-N block if u_s=0.500 and u_k=0.325 between the table and the 20.0-N block.
2. Find the total work done on 12.0-N block if u_s=0.500 and u_k=0.325 between the table and the 20.0-N block.
The Attempt at a Solution
Well the first thing we were supposed to do was find the work done if there was no friction and for the first I got the answer to correctly be 5.625J and the second to be 3.375J. So since the system was already moving I tried to just take the normal force multiplied by the coefficient of kinetic energy but that answer was incorrect. PLEASE HELP.