A wooden block has a coefficient of static friction of0.38159. A felt covered bl

Question

A wooden block has a coefficient of static friction of0.38159. A felt covered block has a coefficient of static frictionof 0.335884. Both blocks were moving along a metal track. At the same time another pair of blocks (one wooden and onefelt covered) moving on an identical metal track have acoefficient of kinetic friction of 0.3914 (wooden) and 0.2888(felt). What are some factors that you think may be responsible forthe largest uncertainties in the friction results? A wooden block has a coefficient of static friction of0.38159. A felt covered block has a coefficient of static frictionof 0.335884. Both blocks were moving along a metal track. At the same time another pair of blocks (one wooden and onefelt covered) moving on an identical metal track have acoefficient of kinetic friction of 0.3914 (wooden) and 0.2888(felt). What are some factors that you think may be responsible forthe largest uncertainties in the friction results?

Explanation / Answer

A wooden block has a coefficient of static friction of0.38159. A felt covered block has a coefficient of static frictionof 0.335884. Both blocks were moving along a metal track. At the same time another pair of blocks (one wooden and onefelt covered) moving on an identical metal track have acoefficient of kinetic friction of 0.3914 (wooden) and 0.2888(felt). What are some factors that you think may be responsible forthe largest uncertainties in the friction results?
impurities associated with the surfaces in contact.
temperature o the surfaces in contact.
degree of polish ness of the two surfaces in contact are somefactors that may be responsible for the largest uncertaintiesin the friction results.

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