In the diagram below block A has a mass of 2 kg and block B has a mass of 4 kg. A) Assume the floor is frictionless and find the tension in string 2 and the acceleration of the blocks if F=20 N. B) If the coefficient of static and kinetic friction between the blocks and the floor is 0.5 and 0.2 will the blocks move? Justify your answer. C) Using kinetic friction find the acceleration of the blocks and the tension in string 2. block B block A string 2 string 1 F

Need help checking practice problems, image included. Thanks!

An object of mass 10 kg is pulled up a rough (friction) inclined plane by a rope. The inclined plane has an angle e = 25.. If the tension in the rope is 100 N and %3D the object accelerates up the incline with a = 3m/s2, what is the coefficient of ki- netic friction? Start with a free body diagram. Write Newton's laws and plug in.

Part A) Determine the speed of the truck in 20 s, starting from rest. Express your answer to three significant figures and include the appropriate units   Part B) Determine the tension developed in the coupling between the SUV and the trailer. Neglect the mass of the wheels. Express your answer to three significant figures and include the appropriate units.

A box of mass m is resting in the flat bed of a truck which is stopped at a red light on a road which slopes upward at an angle qabove the horizontal. The coefficients of friction between the box and the truck bed are given by μs and μk.The light turns green and the truck begins to accelerate.Write all answers in terms of variables given in the problem and any appropriate constants. 1)Draw a free body diagram for the box. 2)Find the maximum acceleration amax of the truck such that the box remains in the exact same place in the truck without sliding. 3)Assume the truck accelerates at a rate greater than the maximum found in part b. (atruck> amax). From the perspective of someone sitting in theback of the truck with the box, the box will beginaccelerating toward the back of the truck. Express this acceleration abox in terms of m, the distance to the back of the truck L, and the kinetic energy K of the box just before it hits the back of the truck.

A block of mass M=8.2 kg placed on a table is pulled to the right by a rope with tension T=40.0 N as in Figure 5. Calculate the minimum coecient of static friction to keep the object at rest.

Please answer all parts with in 30 mins ! i will upvote !

Box A, weighting 60 N, is placed on a table tilted at angle of 15˚. Another box, B, weighing 40N, is placed on top of A. Both boxes are at rest.A) Draw the free-body diagram for box B. What is the frictional force exerted on A by B? B) Draw the free-body diagram for box A. What is the frictional force exerted on A by the table?

Two blocks A and B are in contact with each other on a table without friction. A horizontalforce equal to 3 Newtons is applied to block A (the larger block).a) If M_a =4kg and M_b=1 kg Find the magnitude of the force between the blocksb) If now the force is applied to block B (instead of A), what is the force between theblocks?c) Explain in your own words what happened (the results of (a) and (b)