The tension in the string of a simple pendulum is maximum, when the bob of the pendulum

The PE of a simple pendulum is maximum when it is :

At which position in the string of simple pendulum has maximum tension?

Kinetic energy of the bob of a simple pendulum is maximum

Tension in the string is minimum when the pendulum is at

When is the tension maximum in the spring of a simple pendulum ?

Show that the maximum tension in the string of a simple pendulum, when the amplitude theta_(0) is small, is mg (1+ theta_(0)^(2)) . At what position of the pendulum is the tension maximum ?