Friction. Coefficients of Friction. To push or pull a sled?. Or. Measuring coefficients of friction. . . . . Two boxes and a pulley. . . Incline plane (no friction). m2 = 7 kgWhich way do blocks move?What is acceleration?What is tension in cord?. Incline plane (friction). What range of masses keep the blocks at rest?If m2 = 10 kg, determine the system acceleration.