for(int i=1; i<10; ++i)
{
    Float pos = 0.0;
    Float force = 20.0;
    Float fric = 0.1;
    Float N = i;

    force *= N;
    fric = 0.5 * force * force / 5000;

    while(force > 0.0)
    {
        pos += force;
        force -= fric;
    }

    std::cout << pos << std::endl;
}