## anonymous 3 years ago a wave moves with speed 300m/s on awire which is under a tention of 500N . find how much the tention must be changed to increase the speed to 312m/s

1. anonymous

v is inversely proportional to the square root of tension. do you need further help?

2. anonymous

yup

3. anonymous

since: $$v=\sqrt \frac{T}{m}$$where m is the mass perlength, a constant, rearranging, $$\frac{v_1}{\sqrt T_1}=\frac{v_2}{\sqrt T_2}$$ sub it all in.