They help us seek answers to certain questions by picking on subtle vibrations. They do so by moving in the direction of invisible energy around us. Holding the pendulum over all the seven chakras of the body helps in revealing the imbalance and energy blocks in the chakras. Pendulum, body suspended from a fixed point so that it can swing back and forth under the influence of gravity. Pendulums are used to regulate the movement of clocks because the interval of time for each complete oscillation, called the period, is constant. A so-called simple pendulum consists of a mass, or weight known as a bob, hanging from a string, or cable, of a certain length and fixed at a pivot point. When shifted from its starting position to an initial angle and released, the pendulum swings back and forth freely with periodic motion.