L/4 We L 13 kN/m L/4 Ww FT 30° MT t H

3) The force, FT = 1 kN, and moment, MT = 0.5 kN-m, at the tip are caused by a wing tip vortexand a winglet, not shown. L = 12 m and the spar has an elastic modulus of E = 70 GPa and aPoisson’s ratio of n = 0.33. The mass of the wing is 4000 kg, and the weight of the engine is 107kN. Use 9.8 m/s 2 for the acceleration due to gravity.Consider the cross-section shown (you can look these up). Pay attention to the coordinate systemgiven in the drawing.a) what is the moment of inertia about y-axis in terms of the symbolic dimensions shown?b) what is the moment of inertia about z-axis in terms of the symbolic dimensions shown?c) what is the polar moment of inertia in terms of the symbolic dimensions shown (i.e.about the x-axis)?d) where is the centroid?e) what is the area?f) Calculate the shear modulusg) Compute each of these moments of inertia with the values b = 0.4 m, d =0.5 m , t =0.1 m.

Q10

Need help on all questions. Please include all units, steps to the problem and information such as its direction or if it is in compression or tension. Thx.

PLs see attached image to see the question

An 80 kg spool (k = 0.3 m) is on a rough surface and a cable exerts a G 30 N load to the right, the moment equation about G is a) 0.75(F)-0.2(0.3)=-(80)(0.3²) a b) -0.2(30) -(80)(0.3²) a c) 0.75(FIA)-0.2(30)=-(80) (0.3²) a+80aa d) None of the above 0.75m 0.2m 30N

In the figure below, the equivalent force-couple at point O is: O-123.3î – 176.8ĵ N, 397 N- m ccw F2 = 300 N N O-123.3î - 216.5ĵ N, 233 N- m ccw 1.0 т 45° O-123.3î –176.8ĵ N, 146.7 N- m ccw 45° O-773î – 176.8ĵ N, 1494 N- m ccw F = 250 N 1.5 m

A lifeboat hangs from two ship’s davits, asshown in the figure. A pin of diameter d = 0.80 in.passes through each davit and supports two pulleys,one on each side of the davit.Cables attached to the lifeboat pass over the pulleysand wind around winches that raise and lowerthe lifeboat. The lower parts of the cables are verticaland the upper parts make an angle α =15° with thehorizontal. The allowable tensile force in each cableis 1800 lb, and the allowable shear stress in the pinsis 4000 psi. If the lifeboat weighs 1500 lb, what is the maximumweight that can be carried in the lifeboat?