dynamic balancer for brake rotor

I need help please, it's physics HW?

Apr 23, 2010 by Johnny | Posted in Homework Help

1) A 881 kg car is going 26 m/s and the driver has to slam on his brakes to prevent an accident. Assume that a total of 22.3 kg of iron in the brake pads and rotors absorb the heat produced by the friction between the brake pads and rotors. After the

The kinetic energy of the car is (1/2)mvВІ = (1/2)(881 kg)(26 m/s)ВІ = 298 kJ (to 3 significant digits).
The specific heat of iron, at 25°C (298 K), is 25.1 J·molˉ¹·Kˉ¹.
The molar mass of iron is 55.8 g/mol, so 22.3 kg of iron is

| Apr 23, 2010

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