In September 2020, Coronado Corp. commits to selling 154 of its iPhone-compatible docking stations to Better Buy Co. for $14,014 ($91 per product). The stations are delivered to Better Buy over the next 6 months. After 95 stations are delivered, the contract is
modified and Coronado promises to deliver an additional 41 products for an additional $3,526 ($86 per station). All sales are cash on
delivery.

If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.

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.

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.