balance, eyes, elbow in, follow-through
60.35 divide by 9
Work is force times distance. If there's no distance, there's no work being done.
The mass of the petcock of the pressure cooker is 0.257 kg.
The total pressure inside the cooker is= atmospheric pressure+Gauge pressure
=100 kPa+101 kPa=201*10^3 Pa
The area of the petcock is= (π/4)d^2=0.785*0.004^2=12.56*10^(-6) m^2
Now the mass of the petcock is calculated as
Therefore the mass of the petcock is 0.257 kg