4. Three blocks of different mass (ranging, in order from left to right, from light (block A) to medium (block B, in the middle) to heavy (block C)) are sitting right next to one another on a frictionless horizontal surface. A horizontal force with magnitude F is applied to one of the outer blocks. If you needed to exterminate a hostile bug by using the block arrangement to squeeze the bug between two blocks, which block would you push on, and between which two blocks would you catch the bug for maximal efficiency (biggest squeezing force)? 5. A block with mass m is put on a wedge with mass M and opening angle 0. The block is connected to a massless rope that passes over a frictionless pulley anchored in the ceiling, as shown in the Figure provided by the instructor. The wedge sits on a frictionless horizontal surface. a) Will the wedge slide when the block is put on it? Support your answer by a FBD b) What is the angle a shown in the Figure when the wedge is allowed to slowly "settle"? c) What is the magnitude of the supporting force by the surface on the wedge? Calculate a formula and discuss how the special cases 0=0 and 0= 1/2 make sense to you. 6. A dog of mass M is trying to move a bale of hay of mass 0.6 M by means of a horizontal cable of mass 0.5 M. a) Make FBDs for the bale of hay, the cable (you may assume the cable is horizontal and taut) and the dog. b) Indicate the companion forces (= action-reaction pairs) in these FBDs. c) Based on the FBDS, answer whether the dog is able in principle to move the bale of hay? If not, explain why not. If yes, explain what condition would need to be satisfied