What are the forces acting on the chandelier?

AI Thread Summary
The discussion focuses on identifying the forces acting on a chandelier, specifically addressing tension and normal forces. It is noted that if the chandelier weighs 10N, the tension force should also be 10N, and a normal force exists at the point of contact with the ceiling. Participants clarify the concept of equilibrium, emphasizing that the net force must equal zero according to Newton's second law. The importance of listing all forces, their magnitudes, and directions is highlighted for a comprehensive analysis. Understanding these forces is essential for solving problems related to the chandelier's stability and dynamics.
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Homework Statement


See picture.


Homework Equations





The Attempt at a Solution



I want to know what are all the forces acting on this object.
If the object is 10N , the tension force suppose to be 10N. But wouldn' there be a normal force acting between the point touching the ceiling and the ceiling since ceiling is a surface?
 

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cmkc109 said:

Homework Statement


See picture.


Homework Equations





The Attempt at a Solution



I want to know what are all the forces acting on this object.
If the object is 10N , the tension force suppose to be 10N. But wouldn' there be a normal force acting between the point touching the ceiling and the ceiling since ceiling is a surface?

Consider the equilibrium of the chandelier.
Now consider the equilibrium of the chandelier + Rope System.
Apply Newtons laws.
You will arrive at the answer.
 
what do u mean by equilibrium of the chandelier??
You mean Newton's 3rd law, every reaction force have an action force, i guess u are saying there is a normal force but there is also a reaction force acting back?
sorry, i don't quite get it, can u be more clear?
Thanks
 
quote "But wouldn' there be a normal force acting between the point touching the ceiling and the ceiling since ceiling is a surface? " end quote

There is force at the junction of suspender and ceiling. The force is normal to the ceiling. In relation to the suspender, the force is normal to the cross section of the suspender. Does that help?
Try standing up. There is a compression force between your feet and the ground. The force is normal to the plane of the floor and it is normal to the horizontal cross section of your body.
 
cmkc109 said:
what do u mean by equilibrium of the chandelier??
You mean Newton's 3rd law, every reaction force have an action force, i guess u are saying there is a normal force but there is also a reaction force acting back?
sorry, i don't quite get it, can u be more clear?
Thanks

The best approach in dynamics to make a list of all the forces, their magnitudes, directions and their points of applications. The next step is to study the effects of these forces on the object on which they act. By equilibrium i mean that by 2nd law Fnet=0.
 
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