4/80 A pair of 20-lb forces is applied to the handles of the small eyelet squeezer. The block at A slides with neg- ligible friction in a slot machined in the lower part of the tool. Neglect the small force of the light return spring AE and determine the compressive force Pap- plied to the eyelet.

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°

All 4 pls

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