Direction of work of block colliding with spring

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SUMMARY

The discussion centers on the concept of work in physics, specifically regarding a block colliding with a spring. Participants clarify that work is defined as the scalar multiplication of force and distance, emphasizing that the work vector's direction is influenced by the force applied (F) rather than displacement (X). The conversation highlights discrepancies in textbooks, where some define work done on a system as negative while others define it as positive, indicating a lack of consensus in educational resources.

PREREQUISITES
  • Understanding of basic physics concepts, particularly work and energy.
  • Familiarity with vector and scalar quantities.
  • Knowledge of collision dynamics and spring mechanics.
  • Ability to interpret different physics textbooks and their terminologies.
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  • Research the mathematical definition of work in physics, focusing on scalar and vector quantities.
  • Explore the principles of collision dynamics, particularly involving springs.
  • Examine various physics textbooks to understand differing definitions of work.
  • Learn about the implications of work done on a system in thermodynamics.
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Students of physics, educators seeking clarity on work definitions, and anyone studying mechanics involving collisions and springs.

zhenyazh
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a general question.
suppose i have a spring and a block colliding it.
the direction of the work vector is it defined by F or by X.
 
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I never thought of work as a vector. As far as I can remember it is the scalar multiplication of force and distance. The fact that the work done on a path normal to the direction of force is zero (think about a frictionless surface and an object already moving along the surface) supports what I remember.
 


Work done on or by a system

It depend on which reference your book choice

some books take the work done on a system as negative and in other books positive
 

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