Secondary III • 2yr.
What is the difference between a force, a constraint, and the consequences of the effects of a force?
What is the difference between a force, a constraint, and the consequences of the effects of a force?
Explanation from Alloprof
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A force is an action that can change the shape of a body, modify its movement or cancel its stationary state.
"There are two kinds of force: Tension and compression:
• Tension force: "pulls" the body and tends to pull or stretch the objects. For example, stretching a rubber band, stretching a rope, a chain that pulls an object, a bag stretching due to the heavy objects it contains ...
• Compressive force: Force that pushes on objects and tends to compress, push or crush the objects. For example, a person pushing on a block, a structure built on the ground, a person crushing an aluminum can, chewing ...
Stress is the effect of a force on a body undergoing it. There are 5 types of stresses:
• Crushing
• Elongation
• Torsion
• Bending
• Shearing
These stresses always have consequences on the objects subjected to them. There are three types of consequences of the effects of forces:
• Elastic deformation (temporary deformation)
• Plastic deformation (permanent deformation)
• Rupture (breakage of the object)
In other words, a force is an action, and stress is the effect of a force.
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