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Internal forces within structures!

This is By; Breanne Bautista & Miranda Marzian! :)

Breanne Bautista

on 7 April 2011

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Transcript of Internal forces within structures!

Internal forces within structures! Internal forces are classified by the direction which they act within an object. Some examples would be...
When you crumple a piece of cellophane into a ball and put it on a table. Slowly, the cellophane restores into its original form.
When you have used an elastic band to hold a collection of cards together. Then suddenly the elastic snaps. The three internal forces would be... Compression; is a force that
acts to squeeze an object or
push parts within an object
together. Human body,chairs,
shelves and architectural colums
are structures with parts that
must resist compression. Tension; is the force that acts to stretch or pull apart something. It causes lengthening and possibly snapping of a component.Structures of parts that must resist tension include sky lifts, hydro tower, and running shoes. Shear; Is a force that acts to push parts that are in contact with eachother in opposite direction. Structures with parts that must resist shear include doors, airplanes , and scissors. Complimentary forces are different kinds of internal forces, act on a structure, at the same time. An example of complimentary of forces at work are...
-Can you think of any more
forces at work? Another example would be tug-of-war or lifting an item. Here are some questions! (: 1) What is shear?
A force that acts to push parts that are in contact with eachother in opposite directions.
Structure made of a solid piece.
To cut something.. 2) What is tension?
Mental or emotional strain.
Force that stretches and pulls apart an object. 3) What is compression?
The state of being compressed.
Storage space.
Force that acts to squeeze an object or push parts within an object together. 4) What is the difference between all of them? Compression is a force that squeezes an object together,
Tension is when you stretch or pull an object apart
and shear is pushing two objects in opposite directions. BONUS QUESTION! Can you provide one example for each? By: Breanne and Miranda! :] Two more examples would be a game called tug-of war and lifting objects. By; Breanne and Miranda Our science prezi-tation.
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