2) Find the internal forces in all the members of the truss shown. D A 10 ft B 5ft 5f1 c 100 kips

In the diagram below shows a truss structure which is subjected to an applied load and supported by joints namely pin and rollers. A) draw the fbd of the given truss system in the diagram below and solve for the unknown  support reactions

3. A structure frame is shown in Figure 3 experienced multiple applied forces at joints D and B. The frame is simply supported at A and C. Determine the force in each member of the truss and state if the members are in tension or compression. 300 N 400 N D 2m 250 N 2m B 200 N

An infinitely large sheet is subjected to a gross stress of 350 MPa. There is a central crack 5/π cm long and the material has a yield strength of 500 MPa. a. Calculate the stress-intensity factor at the tip of the crack. b. Calculate the plastic-zone size at the crack tip. c. Comment upon the validity of this plastic-zone correction factor for the above case.

Q3/from figure below, determine the force in each member of the truss. State if the members are in tension or compression. Also, identify the zero-force members in the truss. F 47 45% C 2 m 2 m 100 N 100 N B 3.00 2 m

a) Draw the FBD of the entire truss and use this diagram to determine the reaction forces at the supports. Note the truss is supported by a roller at E Using the Method of Sections, determine the forces in member a) BC (5 b) HC c) HG Show the FBD of the truss after the cut is performed. State whether the members are in tension or compression. 5m Figure 2 B 4 m H 30 kN 5 m G 60 kN 5 m D F 30 kN 5 m E

Consider (Figure 1). The cord is attached to the 36-lb block, and the coefficients of static friction are HB = 0.2 and μp = 0.3. Figure M 1.5 ft B 3 ft -1.5 ft- D C < 1 of 1 Part A Determine the smallest couple moment which can be applied to the 24-lb wheel that will cause impending motion. Express your answer in pound-feet to three significant figures. VAΣo↓↑ vec M = Submit Provide Feedback Request Answer A ? lb-ft

2- Calculate the reactions at supports A and D of the beam shown below. 9 kN 10 kN A B C60° D 1.5m 2 m Im A