Fill in the blank to correctly complete the statement below. The problem faced by Galloping Gertie, the failed bridge across the Tacoma Narrows, was caused because the
engineers did not follow the perform tests on the prototype/testing/
step in the engineering design process.

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.

On a average work day more than work place firs are reorted

Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.