Thursday, June 28, 2012

Day: 13

This quarter, we learned a lot about Newton's laws and free body diagrams. Newton's laws are as follows:


Newtons Law #1: Every object continues in its state of rest, or of uniform motion in a straight line, unless compelled to change that state by external forces acted upon it.
Newtons Law #2: The acceleration a of a body is parallel and directly proportional to the netforce F acting on the body, is in the direction of the net force, and is inversely proportional to the mass m of the body, i.e., F = ma. (also known as F, ma)
Newtons Law #3: When two bodies interact by exerting force on each other, these action andreaction forces are equal in magnitude, but opposite in direction.

We learned a lot about projectile motion and a ridiculous amount on forces!! As we learned about each of Newton's laws, we had to apply them to real-life scenarios as well as learn about what would "theoretically" happen (for example), without friction! We also learned about pulleys and free body diagrams! Forces was a little harder because there are so many different types of force but we also learned to do pulleys and drawing free body diagrams and even learned to solve and draw pulleys on slopes! Which got really complicated. But here is a picture of a fig newton since we seemed to talk about Newtons a lot this quarter :) 

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