What is the magnitude of the normal force of the table on the lower magnet?

AI Thread Summary
The discussion centers on calculating the normal force exerted by a table on a lower magnet positioned beneath its surface. Key forces acting on the magnet include the weight of the table and the weight of the lower magnet itself. Participants suggest drawing a free body diagram to visualize the forces at play and clarify the situation, particularly whether the table is resting on a surface or suspended by the magnets. The normal force is described as the contact force that prevents objects from penetrating each other. Understanding these forces is crucial for accurately determining the normal force.
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Homework Statement


What is the magnitude of the normal force of the table on the lower magnet?
(so there is a table with a magnet on top and below its surface)

Homework Equations



The Attempt at a Solution


So i was wondering if someone could help me figure out all of the forces acting on the magnet to find the normal force. So far:

- weight of the table (down)
- weight of the lower magnet (down)
and so i don't really understand what will oppose these forces.. the force from the magnet on the top of the table?

thanks :)
 
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Try drawing an overall diagram of the situation, then draw a free body diagram for the lower magnet. Is the table resting on a surface? Or is it suspended, being help in place by the two magnets?

In either case there should only be three forces you need to take into account, and two of them will be related to the third.

The normal force is the contact 'repulsion' between surfaces that prevents objects passing through each-other.
 
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