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motor is revolving . there for the work done will be 0 joule
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Answer:
power is 1/4 HP =746/4w=186.5w.
since, efficiency of motor is 40%.
the power used in doing work is 40% of 186.5w, so,
p=186.5 × 40/100
=> p= 74.6w.
angular velocity if the motor, w=600rpm=10 rps.
=> w=(600)(2π) 160 rad/s
=> w= 20π rad/s
let the torque be x.
so, p=xw
=> x=p/w =74.6/(20π)
now,
work done in 1 rotation=(x) (2π)
=> w= [74.6/(20π)]×2π
=> w= 7.46x
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