Previously, I ask an NDSolve questions(https://mathematica.stackexchange.com/questions/84885/how-to-solve-the-differential-equation-with-duhamels-integral), but now a more sophisticated one:
NDSolve[{0.01-10 (0.01 t-x[t]) + (3 Integrate[(1+10 (0.01 (t-τ)-x[t-τ])) x'[t-τ]/Sqrt[τ], {τ, 0, t}])/10^7 == 10 x''[t],
x[0] == 0, x'[0] == 0}, x, {t, 0, 10}]
How to solve it?