Homework Help: physics

Posted by Sasha on Tuesday, November 3, 2009 at 9:26pm.

a .45kg ball, attached to the end of a horizontal cord, is rotated in a circle of radius 1.3m on a frictionless horizontal surface. if the cord will break when the tension in it exceeds 75 N, what is the maximum speed the ball can have?

physics - bobpursley, Tuesday, November 3, 2009 at 9:27pm
75=mv^2/r
solve for v.
physics - john, Friday, November 6, 2009 at 12:55pm
9
physics - GARRETT, Wednesday, September 29, 2010 at 12:40am
The answer is actually 14.72 m/s :)
(the square root of 1.3*75/.45 = 14.72)

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