Phy II - Class 1.docx - Chapter 6 Review Waves A phenomenon that repeats itself both in space and time Turnes second = 1 second = Hz(frequency f=1/T ac

Phy II - Class 1.docx - Chapter 6 Review Waves A phenomenon...

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1-25-16 Chapter 6 Review { Waves - A phenomenon that repeats itself both in space and time. Turnes / second = 1/ second = Hz (frequency) f=1/T a c = V 2 / r : w = v/r - angular velocity = l/r Ө } // review of chapter 6 & chapter 10 Section 6-2 [ springs ] Page 159 - 161 [ springs and the hooke’s law ] Section 6-5 [ circular motion ] Page 169 - 171 [ up to example 6-8 ] Section 10-1 [ Page 297 - 302 HOMEWORK Due. 2-1-16 Chapter 6. Page 179 [ 21 - 22 ] Chapter 10. Page 323 [ 1 - 10 ] Chapter 13. Page 445 [ 1 - 7, 10, 11, 13 - 18 ] Springs (chapter 10) F = mg ; applied force (gravity downward) F / x = constant = k = spring constant
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Unformatted text preview: [ F = k x ] refuses to Hooke's law [ F = -k x ] : Hooke’s Law Chapter 13 Equation of motion of mass m executing harmonic oscillation. X = A*cos ( 2π / T * t ) { A = amplitude ( oscillation ) T = period of the motion A = 10cm T = 2.4s } x △ X = 10 cos( [2π / 2.4] * t ) t = 0.0 , x = 10 [ When time is at zero this is the amplitude of the function ] t = 0.3 , x = 7.071067812 t = 0.6 , x = 0 t = 1.2 , x = - 10 t = 1.8 , x = 0 t = 2.4 , x = 10 t = 2.7 , x = 7.071067812 { X = 5cos(6.2t) T = 2π / 6.2 = 1.01 s A = 5m } Example of how to determine A & T Velocity ( As a function of time ) V = -A w Sin (w t )...
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