Jacob+Mack-Boll+11-17

//The Physics Journalist//, November 17, 2008
On November 17, 2008 in room 019, Mr. Manning's 4th pd. Physics class began to study a very exciting topic: Friction. They began the period with a brief graded Daily Question, for review, which asked them to draw a free body diagram for an object when it was sitting still, as well as a diagram for when it was in motion at a constant speed. After completing this, the class discussed the answers to the daily question. The correct diagrams were:

Afterwards, the class began to work on a lab called "The Force of Friction - What a drag!" This lab consisted of using a spring scale to dag object across a lab table. The objects were of different weights, and had different materials on the bottom, that would cause more or less friction, such as plastic tapand record he e and sandpaper. The directions were to increase tension on the spring scale until the object started to move and record the force needed to begin moving the object. Then, to record to force needed to move the object t a constant speed. From this data, plus the weight of the object being pulled, we were supposed to calculate the coefficients of friction.

-Jacob Mack-Boll