Multi-Body Friction: Acceleration Impact

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In summary, the question is about how friction works between two objects that are both accelerating at different rates. The conversation discusses a scenario where one object is on top of another and the surface has no friction. The proposed explanation is that if the force on the top object is greater than the static friction between the two objects, the bottom object will begin to accelerate in the opposite direction. Once the force is released, the friction between the objects will accelerate the top object in the opposite direction, but it is unclear how this will affect the acceleration of the bottom object.
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BaneOfGodot
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How does friction work between two objects that are both accelerating at different accelerations?
 
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  • #2
I think you are going to need to explain your question in more detail - and provide an attempt to answer it yourself.
 
  • #3
It's a conceptual question.
For example, if B is on A (each has mass), and A is on a surface with no friction, then as A accelerates, how would friction work between A and B?
My guess is this: When A accelerates, initially B will accelerate with it as a single body system. However, if the force exerted on A is greater than the force of static friction between A and B, then B will begin accelerating in the opposite direction of the force accelerating A. The force accelerating B is the kinetic friction between A and B.
If the force on A is released, though, will the friction between A and B accelerate A in the opposite direction? And how will this affect the acceleration of B?
 

FAQ: Multi-Body Friction: Acceleration Impact

What is multi-body friction?

Multi-body friction is the resistance to relative motion between two or more bodies in contact with each other. It occurs when there is a force acting on an object that is in contact with another surface, causing it to move or resist motion.

What is acceleration impact?

Acceleration impact is the change in velocity of an object over time. It is caused by a force acting on the object and can be either positive (speeding up) or negative (slowing down).

How does friction affect acceleration impact?

Friction can either increase or decrease acceleration impact depending on the direction of the force. If the force is in the same direction as the motion, friction will decrease the acceleration impact. However, if the force is in the opposite direction, friction will increase the acceleration impact.

What factors affect multi-body friction?

The factors that affect multi-body friction include the nature of the surfaces in contact, the force applied, the angle of the surfaces, and the presence of any lubricants or contaminants.

How is multi-body friction measured?

Multi-body friction is typically measured using a device called a tribometer, which measures the force required to move one surface over another. It is also measured using mathematical equations that take into account the various factors that affect friction.

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