Problem 6.73 You are asked to design spring bumpers for the walls of a parking garage....
You have been asked to design a "ballistic spring system to measure the speed of bullets. A spring whose spring constant is k is suspended from the ceiling. A block of mass M hangs from the spring. A bullet of mass m is tired vertically upward into the bottom of the block. The spring's maximum compression d is measured from its initial suspended position. Find an expression for the bullet's speed uh- Express your answer in terms of the variables...
Part A You have been hired to design a spring-launched roller coaster that will carry two passengers per car. The car goes up a 12-m-high hill, then descends 17 m to the track's lowest point. You've determined that the spring can be compressed a maximum of 2.1 m and that a loaded car will have a maximum mass of 440 kg. For safety reasons, the spring constant should be 12 % larger than the minimum needed for the car to...