Hi i was wodnering if anybody could help me with this question : 1. In the horizontal starting area of a four person boblsed race, the four athletes, with a combined mass including outfits of 295kg, exert a minimum horizontal force of 41 N [fwd] to get the 315kg sled to be gin moving. After the sled has traveled for almost 15m, all four people jump into the sled, and the sled then experiences a kinetic friction of magnitude 66N. Determine the coefficient of :
(a) static friction
(b) kinetic friction

Question

Hi i was wodnering if anybody could help me with this question : 1. In the horizontal starting area of a four person boblsed race, the four athletes, with a combined mass including outfits of 295kg, exert a minimum horizontal force of 41 N [fwd] to get the 315kg sled to be gin moving. After the sled has traveled for almost 15m, all four people jump into the sled, and the sled then experiences a kinetic friction of magnitude 66N. Determine the coefficient of :
(a) static friction
(b) kinetic friction

souvik · Answer

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$$f=\mu _{k}N$$  and $N=mg$
find  $\mu _{k}$