l force onto the inner bottom rim of the lid. Given that the Dol at point A and a 20-lb force is exerted on the handle a e exerted on the rim.

4 for the frame loading shown, determine the components of the force exerted at D on member DEF. (Assume the distance between B and C is 5 m.) 200 N D G 5 m A E 5 m 300 N F 4.5 m 4.5 m 3 m ound Ground

Problem 3. Determine the vertical clamping force at E in terms of the force F applied at the handle. E is in smooth contact with the ground. (Hint: Look for two-force members) a/2 h - 1.5 a |C 60 DE a/2' 1.5 a

Determine the magnitude of the clamping forces (in pounds) exerted on the nut along line aa when two 78-lb forces are applied to the handles as shown. Assume that pins A and D slide freely in the slots in the jaws.

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The smooth disks D and E have a weight of 200 lb and 100 lb, respectively. a. Determine the largest horizontal force P that can be applied to the center of disk E without causing the disk D to move up the incline. b. Determine also the reactions (??, ??, ??? ??) at the contact surfaces. Assume smooth surfaces.

P a А a D a a Which of the followingis closest to the force in member CD?

60 deg angle of the 4 kN force is changed to 30 deg

Deter mine the magnitude of the tension in the three chords, Te, Tha and Taoy which is required for equlibrium at point A. 'Ac) 'AB B D 30° A C 10 kg Note: Point A is at the ongin, of the Y-( dionte suston や

Knowing the tension in cable AC is 795 N, determine the components of the force exerted by the cable on the support at A. in this problem. The wooden board will not be in your FBD.) (Note: Our FBDS are focused on points not objects. Your FBD should show the “special points" 400 mm 450 mm 600 mm B D C 600 mm