Thursday

April 17, 2014

April 17, 2014

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

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

- Physics -
**Jennifer**, Tuesday, January 15, 2013 at 8:52pmv = 2*PI*r/T

where T is the period

2010 = 2*PI*0.15/T

centripetal acceleration = v^2/r

Force = m*v^2/r

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