posted by ashely .
find the solution of the wave equation for a vibrating string of length (l)=10units with ends fixed .it is given that c^2=1,initial velocity is zero and initial deflection is u(x,o)=k(sinx-sin2x)
it i'll be 60m
as there is no external force acting except gravitational force ,do its path should be at the range of parabolic path
conservation of momentum m1d1+m2d2=md
the other piece will fall 60m far from origin