An elevator of mass 1000 kg rests at a level 5 m above the base of an elevator shaft. It is raised to 200 m above the base of the shaft, where the cable holding it breaks. The elevator falls freely to the base of the shaft and strikes a strong spring. The spring is designed to bring the elevator to rest and, by means of a catch arrangement, to hold the elevator at the position of maximum spring compression. Assuming the entire process to be frictionless, and taking g = 9.8m/s2. calculate: a. b. C. d. e. The potential energy of the elevator in its initial position relative to the base of the shaft. f. The work done in raising the elevator The potential energy of the elevator in its highest position relative to the base to the shaft The potential energy of the compressed spring The energy of the system consisting of the elevator and spring: i. at the start of the process, ii. When the elevator reaches its maximum height iii. Just before the elevator strikes the spring iv. After the elevator has come to rest. The velocity and kinetic energy of the elevator just before it strikes the spring.
An elevator of mass 1000 kg rests at a level 5 m above the base of an elevator shaft. It is raised to 200 m above the base of the shaft, where the cable holding it breaks. The elevator falls freely to the base of the shaft and strikes a strong spring. The spring is designed to bring the elevator to rest and, by means of a catch arrangement, to hold the elevator at the position of maximum spring compression. Assuming the entire process to be frictionless, and taking g = 9.8m/s2. calculate: a. b. C. d. e. The potential energy of the elevator in its initial position relative to the base of the shaft. f. The work done in raising the elevator The potential energy of the elevator in its highest position relative to the base to the shaft The potential energy of the compressed spring The energy of the system consisting of the elevator and spring: i. at the start of the process, ii. When the elevator reaches its maximum height iii. Just before the elevator strikes the spring iv. After the elevator has come to rest. The velocity and kinetic energy of the elevator just before it strikes the spring.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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