Phoenix Business Daily

How are inertia and mass related to each other?

Can anyone explain to me the concept of inertia in detail? And what is it's relation to mass? Then guys, is inertia and weight related to each other?

Public Comments

1. A body in motion attempts to remain in motion. The greater the MASS the greater the momentum. Things want to keep going inthe direction they are traveling, and the bigger they are the more likely they are to do same.
2. ok... well... Newton's first law of motion states that "An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force." which pretty much means that an object will keep moving until you try to stop it. when you try and stop it, you have to use force, and that force will act against another force. That "other force" that the force of your hand is acting on is inertia, the resistance the object is giving to your force. And since the bigger the object (the bigger its mass) the bigger the force needed to stop the object will be if it is going at the same rate as a smaller object. Imagine a plane crashing into an elephant and a fly crashing into an elephant, which will have a bigger effect?
3. Inertia is newton's law of an object in motion continuing in motion until it is acted upon by another force. The amount of mass an object has directly affects its inertia. If it is more massive, the other force will have less effect on the massive object in motion.
4. well... without mass, you can't have inertia..
5. greater mass=greater inertia. Inertia is a body's tendency to remain in the state of motion it's in. When a body has greater mass it takes more energy to change its state of motion, resulting in more inertia.
6. Inertia is the tendency of any object to resist any change in it's state of rest , motion and direction.They are called inertia of rest, inertia of motion and inertia of direction respectively. For example - When a car stops suddenly, the passengers move forward because the lower portion of bodies of passengers is in direct contact with the seat of the car in comparison with the upper portion of their body.The upper portion tends to remain in motion. It's called inertia of motion. The lower portion comes to rest quickly here because it is in direct contact with the seat of the car while the upper portion takes time.This is the reason why seat belts are advisible because when the passenger moves forward ,the seat belt stretches a little and controlles movement.Mass is the measure of inertia.More the mass ,more is the inertia.Less the mass, less is the inertia.In other words , inertia is directly proportional to mass.
7. Inertia is inability of a body to change its state of rest or of uniform motion.A body without the action of some external agent cannot move if it is at rest ,cannot change its speed , can not change the direction of its motion. (this is Newton's law of motion) Galileo stated that "bodies move due to inertia" Inertia is property of matter due to which a body resists any change in its state of rest or of uniform motion. Mass of a body is a measure of its inertia. A piece of chalk (or pencil ) at rest on a table will remain at rest unless a person,animal or bird or a rod or another pencil comes in contact with it and moves it. You can push a chair but you can not push a very big table, the table resists more,it has more inertia it has more mass as compared to chair
8. read your book !