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Mar
29
comment Integrating for velocity
Very true. Thanks for the insight.
Mar
29
comment Integrating for velocity
In this case that is correct. But, only because gravity is a conservative force. In my opinion, the mathematical approach is more appropriate here as it always works, and this is also mathematics stackexchange, not physics.
Mar
29
comment Integrating for speed
Cross-posted from math.stackexchange.com/q/731741
Jan
27
comment What is the frictional force of this car?
I completely agree with you, the way the OQ is worded required me to make significant assumptions, including that the surface is horizontal. In saying that it is the only significant force, I meant that it is the only force contributing to the measured acceleration. Definitely could have worded it a bit better.
Jan
17
comment Dynamics of a Vertical Mass-Spring Simple Harmonic Oscillator with Gravity
According to my coordinate system, the vertical displacement at time zero is equal to zero. So, should the phase $\phi$ not also equal zero? If so, my solution is equal to the one described by you. Or, is my coordinate system inherently flawed?