Gabby in Physics: Newton's Second Law (F = ma)

Gabby in Physics: Newton's Second Law (F = ma): Newton's Second Law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the...

Friction Lab

In this lab, we were supposed to find the static friction of a block on a slanted board with one side covered in sand paper and then the other side smooth. The block weighed 161.5 g. We placed the block, on its sandpaper side, on the board. We then tilted the board upward from the table until the block started to slide. We found the angle closest to the point of sliding without sliding. The angle for the sandpaper side was 42 degrees. The angle for the smooth side was 17 degrees. we then used sin and cos to find our components (ex: 42cos161.2). We found that the static friction of the sand papered side was 1.06N and the static friction of the smooth side was .463N.

Physics 10-4-11 Chair Push

Today in our physics class, we pushed a rolling chair down the hallway. We pushed it with a partner sitting in it. We tried pushing it with fast acceleration and slow acceleration. I learned that I exerted more power trying to use fast acceleration and less when slowly accelerating. Another part of the activity was pushing it when there wasn't any thing in the chair and then when some one plus a weight was in the chair. The force used in pushing something varies inversely to the weight of the thing being pushed, meaning that the heavier the item, the harder it is to push.