More on work and conservation of energy (10)

[4thKyuubi]

Ive never felt so smart after watching your videos...

[WHY70122]

I download every single attached document file that comes with your vids but for this series of tutorial i don't see any page that has left hand and right hand column. what document are you using?

[kstahmer]

Thanks, excellent series.

When solving problems, recommend first setting up the problem's equation in terms of its variable names, say m, g, N, v, h, f & d. Then solve for the variable unknown. Finally, substitute in the known numerical values to calculate the unknown numerical value.

A problem's most important goal is to understand its underlying physics. When problem specific numerical values are substituted in early, they obscure that understanding.