A group of students conduct a friction lab experiment where a cart was pulled ho

Question

A group of students conduct a friction lab experiment where a cart was pulled horizontally along a track by a force sensor, and it was pulled in such a way so that the acceleration of the cart was zero. The mass of the cart was varied and the corresponding pulling force was measured. Their data is given in the table below. With their data, given in the table below, find the coefficient of kinetic friction using the slope of the pulling force vs weight of the cart line Use g = 9.800 m/s, and answer to four digits past the decimal. m (grams) pul (N) 90 290 150 525 872 0.41 1.34 0.69 2.42 4.02 1.9251

Explanation / Answer

umg = F

u = F/mg (1) = 0.41/(0.09 x 9.8) = 0.464853

(2) = 1.34/(0.29 x 9.8) = 0.471499

(3) = 0.69/(0.15 x 9.8) = 0.469388

(4) = 2.42/(0.525 x 9.8) = 0.47036

(5) = 4.02/(0.872 x 9.8) = 0.470417

u = [ 0.464853 + 0.471499 + 0.469388 + 0.47036 + 0.470417]/5 = 0.4693

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