Lesson 7: Systems and Newton's 3rd Law Practice uestion 5 (a) Three identical blocks form the system shown below. Blocks B and C are connected by a string over a pulley. Block A sits on top of block B. There is no frictional force between block B and the surface of the table but there is friction between the blocks. When released, block A remains on top of block B with no slipping. Let W be the weight of each block, T be the tension in the string, and F be the frictional force acting on block A while the system is in motion. How do the magnitudes of the forces compare? A.W>T>F B.W>T=F C.W=T=F D.W=T>F Explain why