Tuesday, March 4, 2014

Force!

Ion_Turtle is finally back! Today I am talking about force (no Star Wars jokes). "A force is a push or pull upon an object resulting from the object's interaction with another object," says the Physics Classroom (Link) Three examples of forces are gravity, air resistance and friction.



Newtons are used to measure force. A newton is equal to the force that would give a mass of one kilogram an acceleration of one meter per second squared. Basically one newton would make one kilogram accelerate at one meter per second squared (that's a lot of ones)










Net force is the overall force acting on an object. If two people are push at a something from opposite sides you can use simple math to find the net force. If both people are pushing at 5 Newtons then the object will not move because the net force is 0 (5-5=0) But if one pushes harder (10 Newtons) then the net force would be 5 to the right (10-5=5) That is also an example of balanced and unbalanced forces. The first example where the net force is 0 the force is balanced. In the second one it is not. Like I said in the first scenario (net force=0/balanced) the box will move. And in the second scenario (net force=5/unbalanced) the box will not move.









Thrust is also important. Your Dictionary (cool name) says, "thrust is the act of pushing with force." (link) So basically if your pushing a box your thrusting it... OK moving on.

Your Dictionary also says, "centripetal force is what allows something to move in a curved path by pulling whatever is going around in a circle into the middle of the circle." Basically if you spin something it will be forced outward, but if it is not connected and you spin it out it will just fly out. (Like those spinning rides were you get strapped to the wall and spun around)






That's all for today. So see you later.

Link Dump:
Gravity
Force Pic
Guys pushing box
Centripetal Force

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