# The ball suspended on a thread is deflected to the left and released. through what fraction

**The ball suspended on a thread is deflected to the left and released. through what fraction of the period the kinetic energy of the pendulum will be maximum.**

The period of oscillation T of a mathematical pendulum is the time of one complete oscillation. This is the time when the pendulum from the left deviation passes the equilibrium position, deviates to the right and stops, starts moving in the opposite direction, again passes the equilibrium position and returns to the left deviation position.

At the moment of deflection, the pendulum has only potential energy En = m * g * h. When moving, the potential energy En begins to transform into kinetic energy Ek = m * V ^ 2/2. At the moment of passing the equilibrium position En = 0, it all passed into kinetic energy. The kinetic energy will be maximum when the pendulum passes the equilibrium position, after 1/4 and 3/4 of the period T.