Posted by ashely on Saturday, February 11, 2012 at 1:10pm.
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(sinxsin2x)

physics  ashley111, Friday, February 17, 2012 at 8:24am
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
range(R)=u^2sin(theta)/g
here u=20,theta=45,g=10
thus R=20^2sin45/10=4
conservation of momentum m1d1+m2d2=md
m/2*20+m/2*d2=m40
d2=60
the other piece will fall 60m far from origin