ch15-p025 - 25. (a) We interpret the problem as asking for...

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sin (14.0 N)sin 40.0 sin 0.0750 m 120 N/m mg kx mg x k θ ° = ¡ == = at equilibrium. The calculator is in degrees mode in the above calculation. The distance from the top of the incline is therefore (0.450 + 0.75) m = 0.525 m. (b) Just as with a vertical spring, the effect of gravity (or one of its components) is simply to shift the equilibrium position; it does not change the characteristics (such as the period) of simple harmonic motion. Thus, Eq. 15-13 applies, and we obtain
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