Question

A ball on a string moves around a complete circle, once a second, on a frictionless, horizontal table. The tension in the string is measured to be 6.0N . What would the tension be if the ball went around in only half a second?

Answer 1

visit http://hyperphysics.phy-astr.gsu.edu/hbase/waves/string.html

\[f=\sqrt{T/2ml}\]
making '2ml' the subject of the formula
\[2ml=T/f ^{2}\]
then we can say
\[T1/f1 ^{2}= T2/f2^{2}\]
Then you can go on from there...
I think the answer would be \[1.5Newton\]

Answer 2

vorex, are you looking at different resonant frequency? o.O cuz f is frequency.. i think.