Phy53 Lecture Summary -- Dr. Brown -- 14 Sep 2010 -- 11:40 - 12:55

hwk probs examples  --->  work-energy

only one solution for #10

1. rotating turntable with piece of chocolate  [meta comment -- start with N2!; follow rubric]

    v = r \omega ==> a_r = v^2/r = r \omega^2

2. prob #8

   diffy-q :   \frac{dv_t}{dt}= -\frac{\mu_k v^2}{R}

3. prob #4  sort of

w-e in 1D

N2 w/chain rule 
defines work and kinetic energy -- redoes 3 [that was easy]

now gen. to 3D