The master cylinder piston in a car braking system has a diameter of 2.0 cm. The effective area of the brake pads on each of...

      

The master cylinder piston in a car braking system has a diameter of 2.0 cm. The
effective area of the brake pads on each of the four wheels is 30 cm2
. The driver
exerts a force of 500 n on the brake pedal. Calculate
a) The pressure in the master cylinder
b) The total braking force in the car.

  

Answers


Moraa
a) Area of the master cylinder – p r
2
= 3.14 cm2
Pressure = force /area = 500 / 3.14 × 10-4
= 1.59 × 106 N/m2
b) Area of brake pads = (30 × 4) cm2
. Since pressure in the wheel cylinder is the
same as in the master cylinder)
F = Pressure × Area = (1.59 × 106
) × (120 × 10-4
) = 1.91 × 104 N.
Moraa orina answered the question on April 4, 2018 at 18:13


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