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P07-12: Efficiency and Complex Machines

Author: Timothy McGovern

ASSIGNMENT

Watch my video to get a feel for efficiency and why more complicated machines can't help but be less efficient than simple machines.  There is also a video from the author reminding you that energy might not always go where we want it, but it is still ALWAYS conserved.

My Description of Efficiency and Complex Machines

Author's Description of Conservation of Energy (as a reminder)

Source: (c) 2016, Pearson