P1) Three blocks of masses m, = 8 kg, m, = 4 kg and ma = 3 kg are tied to each other as shown in the figure. The coefficient of kinetic friction between the 4 kg block and the surface is 0.5. When the system is released the blocks move. Calculate the acceleration of the blocks and the tensions in the strings.

Find the rato of masses m1/m2

Consider the system shown below. The incline plane is fixed and the coefficient kinetic friction between M and 2M is ?1, and coefficient kinetic friction between the plane and 2M is ?2. Let M=2.0kg, ?=22o, ?1=0.14, and ?2=0.25. (a) What is the magnitude of the frictional force on mass M? (b) What is the magnitude of the total frictional force on mass 2M? (c) What is the acceleration of mass M? (d) What is the acceleration of mass 2M?

2 Your answer is partially correct. Try again. In the figure, a slab of mass m, = 40 kg rests on a frictionless floor, and a block of mass m, = 9 kg rests on top of the slab. Between block and slab, the coefficient of static friction is 0.60, and the coefficient of kinetic friction is 0.40. A horizontal force F of magnitude 102 N begins to pull directly on the block, as shown. In unit-vector notation, what are the resulting accelerations of (a) the block and (b) the slab? u = 0- (a) Number T-7.4 -7.4 Units m/s^2 (b) Number i+ Units m/s^2 -0.88 Click if you would like to Show Work for this question: Open Show Work SHOW HINT LINK TO TEXT LINK TO SAMPLE PROBLEM LINK TO SAMPLE PROBLEM VIDEO MINI-LECTURE 10:50 PM search ENG 4/4/2021 ond 111Pgup) pri sc DOUSE insert dele home break 13) 23 bac 3 5. 4 R.

In the system below, the coefficient of friction between the block and the table is 0.2. 5 kg 2 kg 10 kg Find the acceleration of the system and the tensions Ti and T3.

Problem 2 (6 points): Blocks A, B and C have weights 50 lb, 25 lb and 15 lb. Block A is tied to wall by a cable. Force P is applied to a cable tied to block B. Coefficient of static friction between blocks A and B is 0.3, between blocks B and C 0.359, between C and ground D is 0.32. a) State the cases of impending motion as the horizontal force P is applied to block B. b) Assuming one of the stated cases of impending motion, draw proper Free Body Diagrams for the assumed case of impending motion. Label the assumed case of impending motion. c) Determine the smallest force P needed to cause impending motion. Justify your answer. d) Determine tension in cable A, from your final answer for the force P. A B D

Problem 1. Find the horizontal force magnitude P needed to start the motion of the block with mass mo in two scenarios: (a) when P is applied to the right and (b) when P is applied to the left. Develop a general solution for each scenario, and subsequently, substitute the values 0= 25°, m = mo = 2.5 kg, μs = 0.40, and μk = 0.35 into your expressions for evaluation. Hs> Hk P (a) A mo Ө m P (b) B