class on Wednesday the 21st

Today we started off by getting back a boatload of stuff. We got HW 4E-4H, two reassessments, and a couple of packets. One of these packets was the FARMIPS packet. This is where we can write a problem and a solution that is a concept on paper and show it to Mr. Burk. If we do 40+ of these on 10 different concepts, we will get 5 extra points on our exam - that would raise your avg. by 1 point. Also doing this will raise your experience with doing these types of problems, therefore getting you an A on the exam. But this will take time, you can't just do it the night before the exam - so start now. Next, we took notes on the lab we did yesterday. These notes were discussing how to use trig to find that Fnet on the object is 0.

opp/hyp=Fn/Fg=sinO, adj/hyp=Fn/Fg=cosO, so Ff= FgsinO=mg*sinO & Fn=mg*cosO when O= the angle of the ramp. MU=mg*sinO/mg*cosO = tanOmax.

(There is a picture above of this lab.)

The last part of class was dedicated to Tug of War. We split up into groups and discussed how Adam or Bob could win the contest. We realized that whoever exerted more Ff on the ground would win, because the Ftension on the rope from both sides are equal due to N3. we tested this out by putting 4 people, shoeless, one one side while the other 4 had shoes. With socks on, Ff is much less than with shoes on, so the shoe side owned because they exerted more Ff. Then later Jason almost got his shoulders dislocated. Homework is 4E and to give 30 mins. to the paper.

NExt scribe is Burge-asaUR.