IIT JEE , AIEEE Forum - Physics , Mechanics - who got the guts to answer my question ???

vish0001

what is the potential energy of a particle performing wave motion ???

i mean shouldn't it be equal to the work done by the tension on that particle =

(Tension) (sin z ) dy , where z is the angle which tension makes with the x axis and y = A sin(wt-kx)

but the asnwer's coming as 1/2 * (tension) * (dy/dx)^2;

vish0001

please answer my question !!! i m waiting for ur replies !!

abhishekgupta

yes bcoz the tension is an internal consv force

ramyadiamond

The P.E. per unit volume is given by,

d

²A²cos²(

t-kx)/2

where d is the density