A door has mass of 44,000 kg. A rotating inertia
QUESTION
A door has mass of 44,000 kg. A rotating inertia of 5.7 X 10^5 kg m^2 at the hinge. width is 3.1 m. Minimum force at the outer edge to make it move from rest through 90 degrees in 30 second.
ANSWER:
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