- #1
tomR
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I have a question - if 2 forces are required to deform an object then why does a piece of space junk impacting an object in space cause deformation? What is the second force?
Does it take two forces to deform an object?
- Thread starter tomR
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- #2
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Who says it takes two (external) forces to deform an object? Just look at a slow-motion video of bat hitting a ball.
- #3
Nik_2213
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Action and Reaction ?? 
- #4
Frabjous
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Ignoring the subtleties, inertia becomes dominant for high rate processes.
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jrmichler
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Because ##F = ma##.tomR said:
The first force is ##F##, the force applied by the impacting object.
The second force is ##ma##, or the mass of the object being hit multiplied by the acceleration of that object.
Typical space junk is moving roughly ten times the velocity of a high velocity rifle bullet. That's a high rate process. The whole impact happens so fast that only the material in the immediate vicinity of the impact is affected. Space junk impact is finished punching a hole (or crater) before the material away from the impact is affected by the impact force.Frabjous said:
1. What is the definition of deformation?
Deformation is the change in shape or size of an object due to the application of forces.
2. Can an object be deformed by only one force?
Yes, an object can be deformed by only one force if the force is strong enough to overcome the object's internal forces and cause a change in shape or size.
3. How do two forces work together to deform an object?
Two forces work together to deform an object by applying a combination of compressive and tensile forces on the object. This results in a change in the object's shape or size.
4. Are there any factors that affect the amount of force needed to deform an object?
Yes, there are several factors that can affect the amount of force needed to deform an object, including the material properties of the object, the size and shape of the object, and the type and direction of the applied forces.
5. Can an object return to its original shape after being deformed by two forces?
It depends on the material properties of the object and the amount of force applied. Some materials have elastic properties that allow them to return to their original shape after deformation, while others may experience permanent deformation.
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