It has been suggested that rotating cylinders about 16.5 mi long and 3.69 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall acceleration on Earth?
Yes we did it ^, I was just following the fixed version of their equation I didn't find an exact derivation of where it came from out of what I read before
I remember looking for more answers the centripetal acceleration I saw was
but there was one more relation that fixes it to get their equation, found something just now
Oct 13th, 2015
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 290 Napplied to its edge causes the wheel to have an angular acceleration of 0.872 rad/s2.
a) What is the moment of inertia of the wheel? 107.9 kg · m2 This is correct on my homework. (
b) What is the mass of the wheel?
Oct 24th, 2015
Humans can bite with a force of approximately 797 N. If a human tooth has the Young's modulus of bone, a cross-sectional area of 1.2 cm2, and is 1.7 cm long, determine the change in the tooth's length during an 7.97 ✕ 102 N bite.