Researchers studying aggression want to evaluate whether wat…

Researchers studying aggression want to evaluate whether watching television violence gives rise to aggressive behavior in children. Suppose they conclude that there is an effect. In that case, researchers need to show that children who watch television violence behave aggressively and that children who do not watch television violence do not act aggressively. This is called

Block A has a negligible weight and sits on an inclined plan…

Block A has a negligible weight and sits on an inclined plane. Determine the following: a. If the coefficient of friction between the block and the surface is μ = 0.16 determine the minimum force P that would cause the block A to slide to the left if Q = 160lb.  b. If instead the coefficient of friction were large enough to prevent block A from sliding, determine the minimum force P that would cause the block to tip over with Q = 160lb.  c. If block B is added to the left of block A and connected by a rigid link (as shown in the lower figure), find the maximum weight of block B for which the system would not slide when P=70lb and μ = 0.16.