A person opens a door by applying a 14-N force perpendicular to it at a distance 0.90 from the hinges. The door is pushed wide open (to 120 degrees ) in 2.4 s .
1) How much work was done?
2) what was the average power delivered?
1) How much work was done?
2) what was the average power delivered?
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Work = Torque * radians = 14*0.9*120degrees*2pi radians/360degrees = 26.4J
Power = W/s = 26.4/2.4 = 11watts
Power = W/s = 26.4/2.4 = 11watts