Two blocks A and B meet in contact as shown in the figure. If he coefficients of static friction for all the surfaces in contact is 0.2, Determine whether the 50-lb force moves the block A up, keep balance, or move block A down, shifting block B to the right.

A 8.0 m long ladder AB leans against a smooth wall making an angle of 70º with the floor. The ladder is uniform and has a mass of 40.0 kg.(a) Determine the forces exerted on the ladder by the floor and the wall (i.e. at A and B respectively).(b) Determine the minimum value of the coefficient of static friction to prevent the ladder from slipping.

The 250 lb uniform crate (center of gravity at G) shown in the figure must be moved without tipping. The applied force P is horizontal. 1.5 ft 1.5 ft Determine: a. The largest coefficient of static friction between the crate and the floor that allows the crate to slide and 2.5 ft P. not tip 4.5 ft b. The corresponding magnitude of P 3.5 ft Include all needed FBD's to solve, and put units on your answers.

I need a process for this problem

The frame supports the 400 kg mass as shown. Assume a coefficient of friction of 0.25 around the pulley. Further assume the frictional forces are fully developed. Determine all external reactions and all pin reactions acting on the structure. pleas show me all your work

The green rods apply a 2.6 kN clamping force to the red object, E. The square-threaded screw used to generate the clamping force passes through a threaded opening at B and presses against lever ACE at E. The coefficient of static friction is = 0.29. Neglect friction at A. The screw has mean radius r = 9 mm and lead L = 2 mm. B 180 mm 70 mm E (a) Determine the force in member CD in kilonewtons. (Enter the magnitude.) kN (b) Determine the magnitude of the moment in N• m that one must apply to the screw to increase the clamping force. N: m (c) Determine the magnitude of the moment in N •m that one must apply to the screw to decrease the clamping force. N: m