6. Conservation of energy
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7. Work/energy problem with friction
A conservation of energy problem where all of the energy is not conserved.
9. Potential energy stored in a spring
Work needed to compress a spring is the same thing as the potential energy stored in the compressed spring.
10. Spring potential energy example (mistake in math)
A spring, a frozen loop-d-loop and more! (See if you can find the mistake I made and get the right answer!)
11. Work as the transfer of energy
David explains "work" as the way forces transfer energy to and from objects
15. Introduction to mechanical advantage
Introduction to simple machines, mechanical advantage and moments.