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Jan24-13, 06:17 PM
Physics Lab: what happens if we ignore gravity?
How come the position function is a perfect sine wave with gravity? It doesn't make sense to me. As the mass is moving up while below the y-axis, wouldn't it be slowed down by gravity? And why the mass is moving down while above the y-axis, wouldn't it be sped up by gravity?
The effect of gravity, which is a constant downward force, is just to change the equilibrium position from what it would be without gravity.