- #1
bmb2009
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Homework Statement
A uniform rope of mass M and length L is hung off a small peg. The rope moves without friction. Obtain an equation for the length of the rope hanging to the right of the peg, which is denoted x(t).
Homework Equations
The Attempt at a Solution
I set up a net force equation: F_net= Axg-A(L-x)g where A is defined as M/L
with manipulation that equation is equivalent to:
M(d^2x/dt^2)= 2Axg-AgL... now how do I solve that equation for x(t)... Please help.. I know I have to separate the variables but I do not know how to solve a second order differential...Thanks