Question

1) The two man bobsled has a maximum mass allowed is 390 kg. We'll use that. Here is a stunning number: The coefficient of kinetic friction between the bobsled runner and the ice is .0073! Since there are two runners, we will multiply that number by 2 and get .0146. Calculate the the kinetic frictional force opposing the motion of the bobsled.

Answer: ??

Answer 1

here,

the maximum mass allowed , m = 390 kg

the coefficient of static friction , uk = 0.146

so, the kinetic frictional force opposing the motion of the bobsled , ff = uk * m * g

ff = 0.146 * 390 * 9.81 N

ff = 558.58 N

the kinetic frictional force opposing the motion of the bobsled is 558.58 N