Hello every body!!! I am going to talk about
the Science class that we did on Tuesday!! First!!!! We got back the quizzes and labs.
We started talking about different type forces (Unbalanced and balanced). Different type of friction and made 3 different forces diagram. There are two different type of forces, Unbalanced-force and balanced force. We also played the game with a cord, that a sort of people on one side and another from other side pushing. and more people were from one side and more force they had, less people pushing from the other side and less force they had. Then we came back and draw three force diagram we draw our self on a line. Then all the type of friction, and explained how Gravity act on an object moving. And what friction depend on??? Good question. First one thing THERE IS ALL-WAYS FRICTION every where you go, every thing you do there is friction. You make friction just sliding your hand each other,
Softly= less friction
Harder pushing= more friction
There are also many types of friction for example;
- The static friction (The biggest type of eve),
- Sliding,
- rolling,
- liquid and gas.
The balanced force is the equal forces a
cting on one object in opposite direction, like the picture below.
The unbalanced force is in motion an it push in two different direction, when the forces can't be equal like the picture below.
Friction: the force that two surface exert on each other when they rub against each other.
Static friction: the acts on object that are moving.
Sliding friction: Is when two solid surface slide over each other.
Rolling friction: Is when an object roll across a surface.
Fluid friction: Is when a solid object moves through a fluid.
Gravity: Is a force that pulls objects toward each other.
For home work you need to make three different force diagram, 1 stationary, and two moving. Remember always show where motion goes!!!!
Some link mite help you:
http://www.youtube.com/watch?v=KvQ3YDALMeg
http://zagreb.ceesa.net/course/view.php?id=188
Nest scribe is............Valentina(Vale)!!!!!!!!!!!!!!
I HOPE YOU ENJOYED!!!!!!
