Zero net force quick check

A zero net force occurs when the vector sum of all the individual forces acting on an object is equal to zero. In other words, the forces are balanced and there is no overall force acting on the object. This means that the object will either remain at rest or continue to move with a constant velocity.

One example of a zero net force is when you push a book across a table with a constant speed. The force of your push is balanced by the frictional force exerted by the table, resulting in a zero net force on the book.

Another example is when an object is hanging motionless from a string. The force of gravity pulling the object downward is balanced by the tension in the string pulling it upward, resulting in a zero net force on the object.

In both of these examples, the forces acting on the object are equal in magnitude and opposite in direction, resulting in a zero net force.