1. Sinusoidal Nature of SHM

2. SHM and Uniform Circular Motion

3. Horizontal View

4. θ x = A cos θ A ω = θ/t x = A cos(ωt) ω = 2П/T = 2Пf

6. At what time is there: max. positive acceleration max. negative acceleration max. positive velocity max. negative velocity Equation: y t y = A sin (ωt) ω =2π/T 3T/4 T/4 0 & T T/2

7. Period of Mass on Spring Compare to circular motion with same T v = Δx/t v 0 = 2ПA/T T = 2ПA/v 0 ½ mv 0 2 = ½ kA 2 v 0 = A (k/m)T = 2П (m/k)

8. To double the period: change in m: 4 times change in k: ¼ as large