posted by Ed .
What minimum coefficient of friction between the tires and the road will allow a 3700 kg truck to navigate an unbanked curve of radius 25 m at a speed of 45 km/h?
Is this right? Thanks for your help.
I have never heard of a friction coefficient that high. It must be wrong.
45 km/h = 12.5 m/s
You did not make the conversion to m/s. Big error there, since V gets squared.
Ff = Fn*µ = M*g*µ = M V^2/r
µ = V^2/(rg) = 0.64