Can Objects with Zero Mass Move Without an Applied Force?

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In summary, an object with zero mass is a theoretical concept that refers to an object without any physical substance or density. It cannot exist in reality and does not interact with its surroundings. Studying objects with zero mass is important in understanding fundamental concepts in physics. An object with zero mass is fundamentally different from an object with very small mass, which still has weight, volume, and the ability to interact with its surroundings.
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Mt. Nixion
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Is it true that if an object has zero mass, and zero inertia, it would move spontaneously in any direction without an applied force?
 
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Mt. Nixion said:
Is it true that if an object has zero mass, and zero inertia, it would move spontaneously in any direction without an applied force?

It wouldn't be an "object" would it? It'd be free (n-dimensional?) space I think.
 
  • #3
yes, in a way it is true, but forces by its very definition applies only to inertial objects so it isn't really that the object can move without an applied force, strictly speaking.
 

FAQ: Can Objects with Zero Mass Move Without an Applied Force?

What is an object with zero mass?

An object with zero mass is a theoretical concept that refers to an object that has no physical substance or density. In other words, it has no weight or volume.

Can an object with zero mass exist in reality?

No, an object with zero mass cannot exist in reality. All known objects in the universe have some level of mass, even if it is very small. Objects with zero mass only exist in theories and equations used in scientific research.

How does an object with zero mass affect its surroundings?

Since an object with zero mass has no physical presence, it does not interact with its surroundings in any way. It does not exert any gravitational force or cause any other effects on its surroundings.

What is the significance of studying objects with zero mass?

Studying objects with zero mass is important in understanding fundamental concepts in physics, such as the nature of space and time. It also plays a crucial role in certain theories, such as the theory of relativity.

How is an object with zero mass different from an object with very small mass?

An object with zero mass and an object with very small mass are fundamentally different. While an object with zero mass has no physical substance, an object with very small mass still has weight and volume, although it may be very small. Additionally, an object with very small mass can still interact with its surroundings, unlike an object with zero mass.

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