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forces - Coggle Diagram
forces
contact
twist
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definition: using force to rotate an object, to either move it, or distort its shape.
observation from question: a twist force is technically not a force. lots of mechanical systems use twist not to twist something, but instead for power. this is called torque, and is pretty much how something gains more power when rotating. the is why if you are throwing a ball, it will go further if you throw it through rotating your elbow, then throwing through rotating your wrist.
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friction
definition: when an objects moves, friction is a resisting force that pushes against the moving object.
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fact: if there was no friction, then if you rolled a ball on the ground it would never stop rolling.
example: when you kick a soccer ball, friction makes it slow down.
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push
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fact:the harder a push the further something goes, but an area with more friction will slow the push down.
observation from questions: friction is technically a push force. there is a lot of factors other than just force, heaviness of the objects your pushing, and the heaviness of the thing your pushing. also friction can be a factor, because if your pushing something on the ground, then that will slow it down.
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normal
definition: a normal force is the force two objects apply to each other which prevents an object from falling through the other.
fact: the supporting object has to be stable for the normal force to happen. a broken chair, would probably not apply normal force when a person sits on it.
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example: when you place a drink bottle on a desk, the desks normal force prevents the drink bottle from falling through the wall.
non contact
magnetic
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observation from question: magnetic items (cobalt nickel or iron) are attracted to magnets and will move toward them without contact if they're close enough.
fact: the earth is like a magnet because the core is full of magnetic metals, and there is a north and south pole. at the north and south pole the magnetic field is strongest.
magnets have a north and south pole, and if you chop a magnet in half, both the halves will have a north and south pole.
gravity
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gravity is where all objects are attracted to each other. When you drop something (e.g pencil) it falls down to meet the earth, but the earth goes up to meet it to, but moves a lot less then the pencil because the objects move based on there masses. the bigger the mass, the less the object will move, and it is the opposite with small objects.
fact: if you placed two objects with equal mass in space, then they will be attracted to each other, but will move more quickly together depending on how close they are. if they are closer then they will move more closely together.
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observation from question: if our planet was not in an orbit, then it ould be drawn straight to the sun, and the sun would also go towards our planet, and they would smash and the earth would be destroyed. if this was the case, the closer the earth was to the sun, the faster it would go.
electrostatic
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definition: where an object has an electric field, which attracts other objects towards it.
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