[header] How to find normal force [title] Understand what normal force refers to. [step] Normal force refers to the amount of force use to counteract the force of gravity. [substeps] Imagine a block sitting on a table. 
The force of gravity pulls the block toward the earth, but clearly, there is some force at work preventing the block from crashing through the table and finishing its descent toward the ground. The force responsible for stopping the block in spite of gravitational force is the normal force.