Webassign: 118 point beast

This weeks webassign happens to have more than 100 submissions. It is a monstrosity looming over you. However, it should in theory weigh much more than other smaller webassigns, so if you get it done it'll be great. Yes, there are multiple choice. Just don't wait until Thursday night. I wouldn't even wait until wednesday night, the amount of clicking you would have to do might result in carpal tunnel if you tackle it all at once. I've got the monitor I plan on smashing up, and an old analog tv set that needs to go, so expect to see my "experiment" sometime soon.


UPDATE: I have almost reached 20%. That may be all I do tonight, and reading the chapter is a must.

Rotational Dynamics Equation Derivation

I=∑miri2= ∫r2dm

Ip= ∫r2dm
= ∫(h+r)2dm

= ∫(h2+2hr=r2)dm

= ∫h2dm + ∫r2dm + ∫2hr dm

= h2 ∫dM + r2 ∫dm

Ip = Mh2 + Icm

τ = r x F
= rFsinθ


F=ma

τ=rF=rma
= rm(rα)
=mr2α
=(∑miri2)α
= Iα

p=mv

l=m(r x v)

dl/dt = m[dr/dt x v + r x dv/dt]

= m [0 + r x a]

=mαr2

dl/dt=Iα