A 23.0 N force pulls horizontally on a three-mass system connected by two horizontal strings that slides on a rough horizontal surface. Starting from the left, the masses of the blocks are 3.9 kg, 1.5 kg and 2.6 kg. The coefficient of kinetic friction μk is 0.19 for all the blocks and the surface. a. Draw free body diagrams for both all three blocks. (3) b. Write Newtons 2 nd law for the blocks. (6) c. What is acceleration of the blocks? (1) d. (Bonus) Find tension T1? (1) e. (Bonus) Find tension T2? (1)
![Two blocks A and B with masses mA = 10 kg and mB = 4 kg are connected by an inextensible cable and released from rest shown in Figure 1 (where block A is placed in position C ). The coefficients of kinetic friction between two blocks and the 30∘ inclined plane are μA = 0.1 and mB = 0.3. The cable is in tension in the entire motion and the sizes of blocks are negligible. (Take gravitational acceleration as 10 m/s2) (a) Draw separate free body diagrams of blocks A and B. Indicate clearly all the forces, directions of motion and coordinate systems. [4 marks] b) Based on the free body diagrams in part (a), establish the equations of motion for blocks A and B and determine the tension in the cable between two blocks. [12 marks] (c) Determine the time required for block A to move 2.5 m from positions C to D along the incline and the velocity of block A when it reaches position D. [4 marks] Figure 1](https://www.doubtrix.com/uploads/editor/3466504776qCVzpwjiZa.png)
