Physics Web Assign Ch 9 #9

The figure below shows the essential parts of a hydraulic brake system. The area of the piston in the master cylinder is 1.8 cm2 and that of the piston in the brake cylinder is 6.4 cm2. The coefficient of friction between shoe and wheel drum is 0.50. If the wheel has a radius of 41 cm, determine the frictional torque about the axle when a force of 48 N is exerted on the brake pedal.
_____ N*m

[AreusBookworm]

Extremely helpful! Your description of what was actually happening made the question make way more sense :3

[MorganTracyJ]

thank you so much! you explained this do well

[tarazahnke]

Bless your soul for this! I would have never understood this question without this explanation! Thank you!

[marktan]

The unit conversion for cm^2 to m^2 should be 1.8 x 100 x 100 because it is m^2  not m