Table of Contents
What happens to an object if the net force is zero?
His First Law states that an object with a net force of zero acting on it will remain at rest, if initially at rest, or it will maintain a constant velocity. Whenever a spring is stretched, if it is to remain motionless, it must experience equal and opposite forces at either end. Note, it does not record 2F or zero.
What does Newton’s third law state?
Newton’s third law states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. The third law is also known as the law of action and reaction. If a body has a net force acting on it, it undergoes accelerated motion in accordance with the second law.
Which is the Newton s3rd law of motion?
Newton’s 3rd law of motion states that for every action, there is an equal and opposite reaction.
Can a body have non zero net force with zero velocity?
No, if the net force acting on a body be zero, then the body won’t necessarily be in the rest position. The situation of the net force equal to zero is impossible in reality. When the net force of the body is equal to zero, it implies that the body cannot be accelerated. This follows from Newton’s second law of motion.
Why is Newton’s second law the real law?
This can be proved by showing that first law and third law are contained in second law of motion. That is if no force is acting on the body then its acceleration is zero, means if a body is at rest, it remains at rest and if the body is moving in straight line with constant velocity, it continues to do so.
How do you know if the net force is zero?
If there is more than one force acting on an object, then F is the net force. If two people pull on an object with equal forces in opposite directions, then the net force is zero and the acceleration is zero.
Is it possible for an object to have zero velocity yet experience a net force?
Acceleration is the change of velocity per unit time, so if there is no force, all we know is that the acceleration is zero. Therefore, the velocity is not changing. So, yes, the object can be moving when there is no force applied to it. Note: “force” in this discussion is to be interpreted as net force.
What happens to an object when there is no net force?
If an object experiences no net force, its velocity will remain constant. The object is either at rest and the velocity is zero or it moves in a straight line with a constant speed.
Newton’s three laws of physics are the basis for mechanics. The first law states that a body at rest will stay at rest until a net external force acts upon it and that a body in motion will remain in motion at a constant velocity until acted on by a net external force.
What does net external force mean in physics?
Net external force is the sum of all of the forcing acting on an object. Just because there are forces acting on an object doesn’t necessarily mean that there is a net external force; forces that are equal in magnitude but acting in opposite directions can cancel one another out.