(Solved): solve the problems show your solution A precast pile 12m long is to be lifted by a crane fro ...

solve the problems show your solution

A precast pile $12\mathrm{m}$ long is to be lifted by a crane from a horizontal position to a vertical position by means of a single sling attached to a point on the pile a distance " $x$ " from the nearer end of the pile. The pile weighs $4.8\mathrm{kN}$ per linear meter. 1. If $x=3\mathrm{m}$, determine the maximum positive moment developed in the pile during the lifting procedure. 2. If $x=3\mathrm{m}$, determine the maximum negative moment developed in the pile during the lifting procedure. 3. Determine the value of " $x$ " so that the maximum moment in the pile is minimum.