4. The control linkage of an airplane consists of a rigid member DBC and a flexible cable AB. A force P is applied to the end D of the member and causes it to rotate by e = 0.35°. The cable is assumed to be originally unstretched. Determine the strain developed in the cable. Answer: EAB = 0.00282 mm/ mm 56 300 mm 300 mm 450 mm

Consider the solid model design of piston picture (a). You have been assigned a task to manufacturethis piston based on the following methods:-a. Sand Castingb. Any other manufacturing method of your own choicec. Draw the complete engineering-based comparison between the adopted method of your ownchoice and sand casting for manufacturing the piston. Your comparison must include theeffectiveness of manufacturing method, stresses-based analysis in manufacturing methods,product finishing, time laps for completing the product, cost effectiveness of methods, laborcost analysis.d. How can you measure the surface roughness of the piston surface highlighted in picture (b),based on your previous knowledge of manufacturing processes? You must have to mention theequipment by which you will measure its roughness and write the accuracy level. You mustdraw a valid reason for selecting that equipment.Take the dimensions of piston at your own but take more realistically.

could you plz take a photo of the solution, the solution above isn't clear, the words are all put together so i can't quite get it.

In your own words, state and justify your assumptions and comment on your working.Marks will be assigned for the quality of the presentation of the working and od the comments.

Choose one ball which you think will be most like a perfect machine.  (Explain and rationalize your choice: What is a perfect machine? Can they exist?)