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Classify the following trusses as stable or unstable. If stable determine if it is determinate or indeterminate. If indeterminate specify the degree of indeterminacy.
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- Mai i 1. Determine the forces in the members of the trus an shown in Fig. 7.1. 24AN 12AN nge Fig. E1406. Through what distance will body A in Fig. P-1408 move in changing its velocity from 6 ft per sec to 12 ft per sec?4.1 through 4.5 Classify each of the plane trusses shown as unstable, statically determinate, or statically indeterminate. If the truss is statically indeterminate, then determine the degree of static indeterminacy.
- 34 RESULTANTS OF FORCE SYSTEMS 112-4 2-7. Determine the resultant of the coplanar foree system in Fig. P 2-7. F1a. P 2-7 FIG. P 2-8 2-8. The 10-lb force in Fig. P 2-8 is the resultant of two forces, one of which is 39 Ib as shown. Determine the other force. 2-8. The resultant of the three forces indicated on the airplane in Fig. P 2-9 is horizontal. Determine the magnitude and sense of the resultant.Determine the resultant of concurret * .coplanar forces system shown in fig Determine the resultant of concurret coplanar forces system shown In fig FON Nos1-1. Determine a pair of horizontal and vertical components of the 340-lb force of Fig. Pl-1. 1-2. Determine a set of horizontal and vertical com- ponents of the 200-lb force of Fig. P1-2. 200 340 P1-1 P1-2
- Q4] Determine the value of that may cause the pinned column AB in the structure of Fig. (4) to buckle. The column is constructed of a material for which E= 20 GPa. Also find the safety factor against failure by buckling If Gall 65 MPa B 0.25 m 50 mm 0.25 m Fig. (4) 0.5 m 50 mm1-B Classify the structures shown in Fig.1-B according to stability and determinacy. B Fig. 1-A1 -7.5m- Fig. 1-A3 -5m- 1/3 4m B 3m Fig. 1-A2 2m 2/3 1/3 Fig. 1-A4 4m Fig.1-B B C afidaThe beam shown in Fig. P.13.26 is simply supported at each end and is provided with an additional support at mid-span. If the beam carries a uniformly distributed load of intensity w and has a flexural rigidity EI, use the principle of superposition to determine the reactions in the supports. Ans. SwL14 (central support), 3wL/8 (outside supports). 100 mm 10 mm 10 mm 200 mm FIGURE P.13.26 10 mm