Arace car with a 106 inch wheelbase has its weight evenly distributed between front and rear axles. at 150 mph, on a race track with 1.0, the optimal brake force has 67.32% of the braking force on the front brakes. a new racing tire generates 1.2. at 150 mph, what percentage of the braking force should now be allocated to the front to achieve optimal braking?

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.