A 60-kg man uses an electric chair to carry him up the stairs. If the chair has a mass of 200 kg, what power must a motor generate to transport the man and chair 5 m vertically in 10 seconds, assuming a constant velocity and ignoring all forces except gravity? 1200 W 1300 W 900 W 400 W
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The weight is the mass times the acceleration due to gravity, which is approximately 9.8 m/s^2. So, the total weight is (60 kg + 200 kg) * 9.8 m/s^2 = 2540 N. Show more…
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