Determine the force P exerted on the twig G. Note that there is a horizontal line of symmetry for the handles, but there is no line of symmetry for the jaws. 16 N 6 mm 13 mm D 36 26 22 mm | mmmm -82 mm 16 N

Calculate the forces in all members of the trusses shown using the method of joints. Indicate whether the members are in tension or compression. Ɵ = 0°

1. For the beams shown below: (a) calculate the support reactions. (b) calculate the internal forces at sections A and B and indicate if the internal forces are positive or negative. F, = 40 lb F2 = 30 lb dj = 20' – 0" dz = 10' – 0" A F2 = 30 lb F = 40 lb 8' – 0" 17' – 0" 3' – 0" 7'- 0" 5' – 0" A 10 ķips 3 kips/ft- 8' – 0" 8' – 0" 3'

Determine the force in each of the members located to the left of FG for the scissors roof truss shown. State whether each member is in tension or compression.

Figure QB1 shows a pin-jointed frame. The length of each of the horizontal and vertical members of the frame is 2m. The frame is supported by a HINGE at point A, and a simple roller support at point F. Two external forces are applied, one at point B and the other at point C, as shown in Figure QB14 Neglect the weight of the frame members. (a) Draw a free body diagram of the frame showing all external loads I and supporting forces. (b) Calculate the magnitudes of the supporting forces at A and F.e (c) Use the method of joints to determine the magnitude of the forcesI in each of the following members of the frame: AB; AC; BC; BD; CD; CE. I State whether each member is in tension or compression. I Clearly show all calculations. ye Be 2me De 2.5kN 2me 2m 2me Fe A 2me 2me E 6.3kN Figure QB14

Determine the magnitude of the gripping forces exerted along line aa on the nut when two 52-lb forces are applied to the handles as shown. Assume that pins A and D slide freely in slots cut in the jaws. P P 4.5 in.- A D 0.75 in. B E a -0.5 in. The magnitude of the gripping force exerted along the line aa is lb.

2. A 600-lb horizontal force is applied to pin A of the frame shown. Determine the forces acting on the two vertical members of the frame. 600 lb ar B 2.5 2.5' + 2.5 2.5

Using the method of joints, determine the force in each member of the truss shown. State whether each member is in tension or compression.