3+Point+Shot

Isaac, Brad, and Bob

Lab Goal: How does temperature affect friction.

Procedure: 1) Get a car which will be used for all trials. 2) Take the car as is and record the room temperature (this is the control data). 3) Measure the friction by dragging the car using loggerpro force scale on the table, then record data. 4) Boil the car, take it out, measure the temperature, tie string to the front. 5) Repeat step 3 6) Freeze the car, take it out, measure the temperature, tie string to the front. 7) Repeat step 3 8) Do 3 trials for each car.

(Celcius) || Conclusion: Our goal was to discover how temperature affected friction. We decided to investigate this by measuring the friction between a hot wheels car and the table. If you refer to our data tables, the average control friction was .022N. The average frozen friction was .03N. The average boiled friction was .015N. According to our results, we can conclude cold temperatures cause more friction than heated temperatures. Though our data clearly suggests this, however, there were sources of error from our procedure that had the potential to cause inaccuracy. One of which was when pulling there were inconsistencies with the force and speed so an average was taken. If we could get an arm of some sort to pull at constant rate our results could be more conclusive.
 * Car 1**
 * Trial || Mass (g) || Avg Force || Friction || Temp
 * Control 1 || 34 || .022N || .022N || 22.3 ||
 * Control 2 || 34 || .026N || .026N || 22.3 ||
 * Control 3 || 34 || .018N || .018N || 22.3 ||
 * Car 2**
 * Trial || Mass (g) || Avg Force || Friction || Temp (Celcius) ||
 * Frozen 1 || 34 || .031N || .031N || 5.1 ||
 * Frozen 2 || 34 || .026N || .026N || 5.1 ||
 * Frozen 3 || 34 || .033N || .033N || 5.1 ||
 * Car 3**
 * Trial || Mass (g) || Avg Force || Friction || Temp (Celcius) ||
 * Boiled 1 || 34 || .015N || .015N || 54.2 ||
 * Boiled 2 || 34 || .026N || .026N || 54.2 ||
 * Boiled 3 || 34 || .004N || .004N || 54.2 ||