Thursday
April 17, 2014

Homework Help: Physics

Posted by Emily on Sunday, January 13, 2013 at 9:42pm.

According to the Guinness Book of World
Records (1990 edition, p. 169), the highest
rotary speed ever attained was 2010 m/s (4500
mph). The rotating rod was 15 cm (5.9 in)
long. Assume the speed quoted is that of the
end of the rod.
What is the centripetal acceleration of the
end of the rod?
Answer in units of m/s
2
If you were to attach a(n) 0.976 g object to the
end of the rod, what force would be needed to
hold it on the rod?
Answer in units of N
What is the period of rotation of the rod?
Answer in units of s

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