Question

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 normal force of the bobsled: Fn

Answer 1

The normal force, is the reaction force that acts in the opposite direction to the weight, and that in a horizontal plane, is exactly this (following the principles of Newton's third law)

Therefore, from the mathematical definition of Weight we have that the normal Force is equivalent to

N = mg

Where,

m = mass

g = Gravitational acceleration

Our mass is 390Kg and acceleration, the product of gravity is equivalent to $9.8m/s^2$

Therefore the normal Force would be

$N = 390*9.8$

$N = 3822N$