Physics, 30.10.2020 05:50 NEONREDBLADE
A 80-kg person stands at rest on a scale while pulling vertically downwards on a rope that is above them. Use g = 9.80 m/s2. What is the critical magnitude of tension that the rope is pulling on the person when the person just begins to lift off the scale?
Answers: 2
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Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.
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A 80-kg person stands at rest on a scale while pulling vertically downwards on a rope that is above...
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