14-91. The 0.75-kg bob of a pendulum is fired from rest at position A by a spring which has a stiffness k = 6 kN/m and is compressed 125 mm.

Determine the speed of the bob and the tension in the cord when the bob is at positions B and C.Point B is located on the path where the radius of curvature is still 0.6 m, i.e., just before the cord becomes horizontal.