Thermo engineering

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The driveshaft of a building’s air-handling fan is turned at 300 RPM by a belt running on a 0.3-m-diameter pulley. The net force applied by the belt on the pulley is 2000 N. determine the torque applied by the belt on the pulley, in N.m, and the power transmitted, in kW.

  • Thermo engineering -

    torque= force*radius

    power= torque*angular speed where
    angular speed= 300*2PI/60 rad/sec

    this will give you power in watts.

  • Thermo engineering -

    torque=300Nm
    power=31.41 Watts

  • Thermo engineering -

    torque=F*D/2=2000n(0.15m)=300 N*m
    Power = Torque*angular speed
    =(300 N*m)(300 RPM) (2*PI/60)
    =9424 W = 9.42 kW

    These are the answers in the back of the text.

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