Mech Newton's second and third lates HW-42 3. A hand pushes three identical bricks as shown. The bricks are moving to the left and speeding up. System A consists of two bricks stacked together. System B consists of a single brick. System C consists of all three bricks. There is friction between the bricks and the table. a. In the spaces provided at right, draw and label separate free-body diagrams for systems A and B. Free-body diagram for system A 1 Fr=MxN Na Mg M=MA. (1+2) Tutorials in Introductory Physics MD b. The vector representing the acceleration of system A is shown at right. Draw the acceleration vectors for systems B and C using the same scale. Explain. Wach c. The vector representing the net force on system A is shown at right. Draw the net force vectors for systems B and C using the same scale. Explain. R Explain how you knew to draw the force vectors as you did. JAT A |Fr=H MB9 1 2 Free-body diagram for system B B 3 3. Acceleration of A Acceleration of B d. The vector representing the frictional force on system A is shown below. Draw the remaining force vectors using the same scale. A Im Acceleration of C Net force on A Net force on B Net force on C OPearson Custom 2nd Ed. for ICQ Boulder