5. Errors
- Error due to dropping pennies in the cup: An error can be introduced depending on the way students drop the pennies into the cup. Without …show more content…
The frictional coefficient (μ) varies and depends on the types of material used. For the lab, we conducted four different experiments. Three of the materials (paper, plastic film, & sand paper) used had different frictional coefficient (μ) values and the forth experiement was a repetition of one of the three materials previously used. We observed that among the three materials used, the sand paper has a higher coefficient of friction than the two remaining materials.This is true because sand paper was the roughest material of all the three types of material we used in this specific experiment. We can logically conclude that the rougher the material, the higher the friction it cause, and hence higher coefficient of