Acaliper brake is required for the front wheels of a passenger car with a braking capacity of 500 nm for each brake. preliminary design estimates have set the brake geometry as ri = 110 mm' and 0 = 43°. pads with a coefficient of friction of 0.38 have been selected. each pad is actuated by means of a hydraulic cylinder of nominal diameter 25.4 mm. determine: 3.1 the required actuating force, the average and the maximum contact pressures, the required hydraulic pressure for brake actuation

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.