Question

If all objects on Earth are acted on by the force of gravity (giving them weight), how is it that an object can remain stationary (be at constant velocity)?

Answer 1

The normal force balances the gravitational force, allowing an object to remain stationary or move at a constant velocity.

Step-by-step explanation:

When an object is at rest or moving at a constant velocity, the net external force acting on the object is zero. This means that the gravitational force pulling the object down is balanced by an equal and opposite force called the normal force, which acts perpendicular to the surface supporting the object.

For example, when you place an object on a flat surface, the normal force exerted by the surface counteracts the weight of the object. The normal force increases or decreases as needed to maintain equilibrium, allowing the object to remain stationary or move at a constant velocity.

So, while all objects on Earth are affected by gravity (giving them weight), it is the balance between the gravitational force and the normal force that allows an object to remain stationary or move at a constant velocity.