Subject: Physics / General Physics
Question
Weight= 189 lbs, 85.73kg, 8.57e+7mg
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Stairs= 7.5 in (8) Total=60 in
Time= 1.03 sec per stair Total= 8.24 sec.
Procedure:
Estimate your mass in kg (Hint: 1 kg (mass) = 2.2 pounds (weight)).
You should approach the bottom step of the stairs with a steady speed.
You are to start the time as you reach the first stair and stop the clock when you reach the top
Observations and Data:
Calculate the work and power for you to climb the flight of stairs
Work (you) = _____; power (you) = ________
Calculate your power in kilowatts: (P(kW) = _____.
Application:
Your local electric company supplies you with 1 kW of power for 1 hour for 8 cents. Assume that you could climb these stairs continuously for 1 hour. How much money would this climb be worth? $_________.
Weightyou=____85.73kg__________ F_W=mg
Workyou = ____5,143.8____ (J) Work= F*d=mgH
Time(sec)= 8.24 (sec)
Poweryou = ______624.25__ Power= Work/Time (J/s=Watt)
Poweryou(in kW) = __0.624______ (kW=Watts/1000)
Money that this climb is worth = ___$21.81_____
