L3_28mar08

# L3_28mar08 - The equation for simple harmonic motion is...

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Review of Lecture 2 on March 26, 2008 A linear restoring force is required for simple harmonic motion: ( 29 ( 29 m k X m kX : springs for , Thus X m ma t cos X m dt dv ma F t cos X X 2 2 m 2 m = ϖ ϖ - = - ϖ - = φ + ϖ ϖ - = = = φ + ϖ =
At t=0, an oscillator is started with zero velocity at its maximum positive amplitude x m . The equation for simple harmonic motion is: 0 +p/4. -p/4. +p/2. -p/2. of the a 0% 0% 0% 0% 0% 0% 40 0 of 5 ( 29 ( 29 φ + ϖ = t cos x t x m What is the value of φ ? 1. 0 2. + π /4. 3. - π /4. 4. + π /2. 5. - π /2. 6. None of the above.

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At t=0, an oscillator is started with maximum negative velocity at x(0)=0.

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Unformatted text preview: The equation for simple harmonic motion is: What is the value of φ ? p/4. p/2. e ab 0% 0% 0% 0% 0% 0% 40 0 of 5 ( 29 ( 29 φ + ϖ = t cos x t x m 1. 0. 2. + π /4. 3.-π /4. 4. + π /2. 5.-π /2. 6. None of the above. The figure shows four oscillators at t = 0. Which one has the phase constant ? (a) (b) (c) (d) 0% 0% 0% 0% 40 0 of 5 ( 29 4 π + = φ 1. (a) 2. (b) 3. (c) 4. (d) The figure shows four oscillators at t = 0. Which one has the phase constant ? (a) (b) (c) (d) 0% 0% 0% 0% 40 0 of 5 ( 29 4 π-= φ 1. (a) 2. (b) 3. (c) 4. (d)...
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