Perpendicular force from cross product

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Discussion Overview

The discussion revolves around the concept of the cross product and its application in identifying perpendicular vectors, particularly in the context of circular motion. Participants explore the relationship between vectors involved in circular motion and the nature of forces acting on an object in such motion.

Discussion Character

  • Exploratory, Debate/contested, Conceptual clarification

Main Points Raised

  • One participant asserts that the cross product is used to find a perpendicular vector to two given vectors and questions whether there is a perpendicular force acting on an object in horizontal circular motion.
  • Another participant clarifies that the centripetal force is indeed perpendicular to the velocity vector in uniform circular motion.
  • Some participants express confusion regarding the initial question, noting a lack of connection between the discussion of the cross product and the question about circular motion.
  • There is a suggestion that the question might be interpreted as asking for the perpendicular vector to both the velocity and force vectors in circular motion, though this remains speculative.
  • One participant critiques the clarity of the original question, indicating that it lacks sufficient detail for a definitive interpretation.

Areas of Agreement / Disagreement

Participants express varying levels of understanding and interpretation of the original question, indicating that there is no consensus on its clarity or intent. Some agree on the nature of centripetal force, while others remain uncertain about the connection to the cross product.

Contextual Notes

The discussion highlights potential limitations in the original question's clarity and the assumptions made about the relationships between the vectors involved in circular motion.

Miraj Kayastha
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Cross product is used to find the perpendicular vector of two vectors. If there is any two vectors in a plane then there is always a perpendicular vector to both of them.

So in circular motion if the motion is horizontal then is there a perpendicular force to the object in circular motion?
 
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Perpendicular to what?
The centripetal force is perpendicular to the velocity vector, if the motion is uniform.
 
That's a confused question. You start by talking about cross product and then end up asking a question about circular motion without ever linking one thing to the other.
 
dauto said:
That's a confused question. You start by talking about cross product and then end up asking a question about circular motion without ever linking one thing to the other.
Maybe he is asking if there are two vectors(Velocity and Force) in circular motion,what is the perpendicular vector to both of them?
 
adjacent said:
Maybe he is asking if there are two vectors(Velocity and Force) in circular motion,what is the perpendicular vector to both of them?

May be, may be not. How is one supposed to tell when the question does not give a clue? It always amazes me how often people can't take the time and put the effort to write a post that makes sense.
 
Last edited:

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