An aluminium block of m is hung from a steel wire of length L. The fundamental
frequency for transverse standing waves on the wire is 300 Hz. The block
is then immersed in water so that half of its volume is submerged. What is the
new fundamental frequency? (You may assume that the mass of the wire is small
compared to the mass of the block and the change in length of the wire under
different loads is negligible.)
Speed of wave on a string,
[tex]F=\rho g V[/tex]
The Attempt at a Solution
when suspended in air,
When half of its volume immersed in water,
The answer I got is
Subbing in values gives me a value of 270Hz...
are my steps correct?