For what minimum force F
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- The load on the truss is L=7.2 kN. What is the force in rod AC?4/15 A drawbridge is being raised by a cable EI The four joint loadings shɔwn resuit from the weight of the roadway. Determine the ferces in members EF, DE, DF, CD, and FG. 10 -10'- F 50 E 10- G 2 kips A 20° 4 klps 4 kips 2 kipsFind the reaction in pin A ? 70 B 1 m -1.40 m 0.8 m 1962 N 1 Add file
- The bell-crank mechanism is in equilibrium for an applied load of P = 24 kN. Assume that a = 300 mm, b = 235 mm, and θ = 55°. The pin at B has a diameter of d = 22 mm, and the bell crank has a thickness of t = 7 mm. Calculate the bearing stress in the bell crank at pin B.Use the method of joints to determine the forces in each member of the truss below. Assume the weight of each member is negligible. 30 D 30 3m -3m. 15 kN 2 kN Fig 1 Physical Looding DTagram (PLD)Aispiston and rest are Pinned joints BF =D2 BWDE =25 rad o 60 DE=400mm Find ve locity of A of the instont
- A pair of 120-N forces is applied to the handles of the small eyelet squeezer. The block at A slides with negligible 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 P applied to the eyelet. 120 N 54.5 mm 40 mm C B 13 mm wwwmaE 6.50 mm 120 N -286.6 Answer: P =The rigid bar of negligible mass, pinned at one end, is supported by a steel rod and aluminum rod asshown. What maximum load P can be applied without exceeding stress in the steel of 130MN/m2or in the aluminum of 90MN/m2d Link OB is 20 mm wide and 10 mm thick and is made from low-carbon steel with Sy= 200 MPa. The pin joints are constructed with sufficient size and fit to provide good resistance to out-of-plane bending. Determine the factor of safety for out-of-plane buckling. 800 mm where F=1250 N A B 400 mm F The factor of safety for out-of-plane buckling is 0.2807
- For Probs. 1-3, (a) draw the free-body diagrams for the entire assembly (or structure) and each of its parts. Neglect friction and the weights of the members unless specified otherwise. Be sure to indicate all relevant dimensions. For each problem, (b) determine the total number of unknown forces and the total number of independent equilibrium equations. Problem 1 500 N 500 N 1 m 500 N (b) (c) Figure 1 Problem 2 -- Ift 4 ft -1.8 ft 100 lb F1.8 ft - 100 lb 100 lb (а) (b) (c)5. This bar is made of AISI 1006 cold-drawn steel (Sy = 280 MPa) and is loaded by the forces F = 0.45 kN, P = 6.0 kN, and T = 30 N-m. Determine the maximum length L of the bar that can be used without exceeding a static factor of safety of 2 for the entire bar (Based on the maximum shear stress theory). You need to find the most critical position. 100 mm 15-mm D.Determine the resulting internal loads on the cross section through point C in the grippers. It has a pin at A and the jaws at B are smooth. *The develop free-body diagrams. *Apply the equations of static equilibrium. 20 N -120 mm- - 40 mm 15 mm C 80 mm 30° 20 N