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Hydraulic Brake Problem How to Start?

  • Thread starter DrunkApple
  • Start date
  • #1
111
0

Homework Statement


A hydraulic brake system is shown. The
area of the piston in the master cylinder is
6.41 cm2, and the area of the piston in the
brake cylinder is 1.69 cm2. The coefficient of
kinetic friction between the brake shoe and
the wheel drum is 0.449.
How large is the frictional force between the
brake shoe and the wheel drum when a force
of 44 N is exerted on the pedal?
Answer in units of N


Homework Equations


[itex]\frac{F1}{A1}[/itex] = [itex]\frac{F2}{A2}\frac{}{}[/itex]
A1 = 6.41 cm[itex]^{2}[/itex]
A2 = 1.69 cm[itex]^{2}[/itex]
F = 44 N
μ = 0.449
F = μF[itex]_{n}[/itex]

The Attempt at a Solution


I don't know how to relate coefficient to this problem. Would you give me some hint please?
 

Answers and Replies

  • #2
Simon Bridge
Science Advisor
Homework Helper
17,847
1,644
It is difficult to see what your problem is... you can convert the force applied to the pedal to force applied to the drum?
 

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