1. For a cantilever beam, the slop of the downward deflection y (m) with a load w (kg/m) can be computed as / =/24(43 − 12 2 + 12 2), where x = distance (m), E = the modulus of elasticity 1.0 ×10^11 Pa, I = moment of inertia 4.0×10^–4 m^4, w = 1.0×10^4 N/m, and L = length = 4.0 m. If y=0 at x=0, use Euler’s method (Δx=0.4 m) to compute the deflection from x=0 to L. List your results in a table and calculate the absolute error for each step (please express y in scientific notation).

Acommercial grade cubical freezer, 4 m on a side, has a composite wall consisting of an exterior sheet of 5.0-mm thick plain carbon steel (kst= 60.5 w/m k), an intermediate layer of 100-mm thick polyurethane insulation (kins 0.02 w/m k), and an inner sheet of 5.0- mm thick aluminium alloy (kal polyurethane insulation and both metallic sheets are each characterized by a thermal contact resistance of r 2.5 x 104 m2 k/w. (a) what is the steady-state cooling load that must be maintained by the refrigerator under conditions for which the outer and inner surface temperatures are 25°c and -5°c, respectively? (b) for power saving purpose, which wall material should be increased/reduced in. thickness in order to reduce 50% of the cooling load found in part (a)? redesign the thickness of the proposed material. 177 w/m-k). adhesive interfaces between the q=575.93 w