A road vehicle equipped with mechanical wheel brake e.g drum or disc brake ,driving at a speed of 100Km/hr is braked to a stand still with a deceleration of 1G (3.2m/sec^2),How large must be the coefficient if friction between wheel and road at least be to enable that.
Options:
1)At least...
If we assume 70% of braked energy from the previous case is transferred to heat into two front brake rotors.How much would the mean temperature of front rotor increase when the vehicle is put to stop.
Assume that :
1)rotor's diameter is 3mm.
2)rotor's thickness is 1cm.
3)Density : 7800...