PHYSICS 109 Study Guide - Final Guide: Standing Wave, Full Width At Half Maximum
Document Summary
For mass m hanging from a spring with spring constant k, the natural frequency is. Supper you have spring with natural frequency 50hz. Resonance curve (looks like a bell curve: horizontal axis: driving frequency (hz, vertical axis: amplitude, never hits zero. Resonance frequency on graph is where the peak is: should be same as natural frequency. [delta]f = fwhm; full width at half maximum. If [tau] is small, the thing doesn"t take long to stop. If [tau] is large, the system takes a long time to damp. Node: place where there is zero amplitude: mode # = #-antinodes on a standing wave. Wavelength = 2l/n: l= length of string. Iii. v : f = tension, m/l = v = nfn = 1f1, fn = 1, fn = 1/ n =nf1. N = 2l/n = 1/n fn = nf1. Beats f1 = v/ 1 = as.
