The 0.8-kg bar is pinned at A and rests on the 1.6-kg spool at B. Both bodies are homogenous. If the coefficient of static friction is 0.25 at both B and C, calculate the largest force P that can be applied without disturbing the equilibrium of the system.

The 185-lb man with center of gravity G supports the 83-lb drum as shown. Find the greatest distance x at which the man can position himself without slipping if the coefficient of static friction between his shoes and the ground is 0.43. 15' 83 lb Answer: x = tel ft T 3.3'

AB and BC bars which are connected at pin B, each having a mass of 100 kg, as shown in the figure. If the coefficient static friction at piont C is 0.5 , determine the maximum value of force P for the system to be in static equilibrium.

Problem 3 - Determine whether the block shown is in equilibrium. Find the magnitude and direction of the friction force. Ms=0.30 MK=0.20 400 N 300N 130 45°

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