Rec07-New

# Rec07-New - Recitation#7 Purpose The purpose of this...

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Recitation #7 Purpose: The purpose of this recitation is to allow you to gain further experience working with the Energy Principle. You will gain more experience with the Work/ Force relationship and the transfer of energy from one type to another. Readings: Sections 6.4-6.9 General Instructions: Identify your system State which objects are interacting with the system State the fundamental principle(s) you use to solve the problems State the approximations and simplifying assumptions you use. Problem 1. A spring with a stiffness s k and relaxed length L stands vertically on a table. You hold a mass M just barely touching the top of the spring. Note: You will solve problem 1 using symbols and not numbers. a) You very slowly let the mass down onto the spring a certain distance, and when you let go, the mass doesn’t move anymore. How much did the spring compress? b) How much work did you do as you lowered the mass? c)

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## This note was uploaded on 12/07/2011 for the course PHYS 172 taught by Professor ? during the Fall '08 term at Purdue.

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Rec07-New - Recitation#7 Purpose The purpose of this...

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