Question

This rock known as balanced rock sits on a thin spike of rock in a canyon in Idaho. Explain the that keep the rock balanced on its tiny pedestal

Answer 1

Based on the given picture above, I can say that this kind of rock is what we call a PRECARIOUS BOULDER, or in simpler terms, it is called a BALANCING ROCK. It is a geological formation that occurs naturally. This can be found in several parts of the earth. How the rock is kept balanced on its tiny pedestal is that it is firmly attached to a base rock or a stem. 

Answer 2

Answer:

Now, suppose you have a more common figure, like a square, and you want to balance it over a pencil for example.

When you put the square over the pencil, you want that the point where the square touches the pencil is right in the middle of one of the faces of the square. This is because, in this situation, you know that the mass is evenly distributed over all sides now, and none side of the square is pulling down with more force than another side.

Now, this is the same with this rock, the mass is evenly distributed around the contact point, so no side has more force downwards than another side, then all the forces are canceled, and if there are no forces acting on the rock, it will remain in place.