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Unformatted text preview: force proportional to the crosssectional area A ∆ F/A ≡ stress For small strain ( < 0.1% l0) stress is proportional to strain stress/strain = constant (Young’s modulus of elasticity) 3/24/11 Physical Properties Governing SHM F k (spring constant) Material Density (kg/m3) Young's Modulus 109 N/m2 Ultimate Strength Su 106 N/m2 Steela 7860 200 400 Aluminu m 2710 70 110 Glass 2190 65 50b Concrete 2320 30 40b 3/24/11 Physical Properties Governing SHM m l0 + ∆ l Steel wire of length (l0) 1 m and diameter 1 mm with a 1 kg mass attached (m) 3/24/11 Floating Objects Hydrometer ρ Α recall, restoring force equal to the weight of the fluid displaced if depressed or raised from equilibrium restoring force displacement from Newton II 3/24/11 Floating Objects applies to a ship h 3/24/11...
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This note was uploaded on 03/23/2011 for the course PHYS 422 taught by Professor Staff during the Spring '08 term at Purdue.
 Spring '08
 Staff
 Force, Mass, Simple Harmonic Motion

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