damped sales and forced an extended shutdown of its U.S. plants. Chrysler Group LLC, ushered into bankruptcy in 2009 by the U.S. Government, also reported third-quarter loss. Recently Chrysler laid out detailed plan for recovery that predicts it will break even in 2010 and make money in 2011. Ford was the only one company reported $1 billion third-quarter profit among ‘Big Three’. Though its
1. Pump에서의 Cavitation (공동현상) 에 대하여 기술하고 이로 생길 수 있는 문제점과 그 방지책에 대해 논하시오
- Cavitation이란
유체가 넓은 유로에서 좁을 곳으로 고속 유입하거나 벽면의 요철, 만곡부 등으로 흐름이 직선적이지 못할 때 유체는 저압이 되고 포화증기압보다 낮아지면 기화되어 기포가
we pull the body down a certain distance and then release it, it undergoes a motion. We assume that the body moves strictly vertically.
We want to determine the motion of our mechanical system. For this purpose we consider the forces acting on the body during the motion. This will lead to a differential equation, whose solution will give the displacement of the mass as a function of time .