Question

A pendulum has 859 J of potential energy at the highest point of its swing. How much kinetic energy will it have at the bottom of its swing

Answer 1

We know, Potential Energy remains Highest at the highest point & Kinetic energy at the lowest point and as their sum would be constant at every point, it will be 859 J

In short, Your Answer would be 859 Joules

Hope this helps!