Critical Thinking Questions 1. Describe an occasion in which an explanatory sketch would be used.
2. While it seems rather obvious that engineers need to consider the end user, how might this perspective get lost in the design process?
3. Give an example of a product in which ductility would be a particularly important factor. Explain your answer.
4. Why might a prototype be built with different materials than those used in the final product?
5. Which of the careers in engineering discussed in the unit appeals to you the most and why?

The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?