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Forces - Coggle Diagram
Forces
Contact forces
Twist
B: Facts: If a weak object has too much force applied (too much torsion) it could result in it ripping or breaking. Torsion creates stress inside a material.
C:Turning a door handle, Twisting a rubber band, twisting a towel to get out the water eg.
A: Its is a force that is applied on an object by twisting. Another word for this is torsion. By doing this, a object can be twisted in two opposite ways or in one direction.
D: In this image the force applied on the beam is being twisted in to opposite directions:
E: Yes, there is a certain paper spring that as you push down on it twist as well and when released id goes back to its normal form. So, in this case, you can convert a push force into a twisting force.
Friction
C: Rubbing both hands together to create heat, Sliding down a slide, ice skating (the ice and skates), riding a bike ( the tiers and road) eg.
D: Here the two block create friction and the hands rubbing together create friction.
B: Fact: If a ball rolled down a hill, the smoother the surface the less friction created but the rougher the surface, the more friction is made.
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Push
C: Experiment 1: The air goes threw the straw and it creates bubbles inside of the water. The air is the pushing force. Examples: Pushing a door closed, kicking a ball, pushing your shoes off, pushing a go cart.
B: Facts: Pushing a object on the ground creates friction between the ground and object that is being pushed. A push force is always unbalanced when in motion.
A: A push is the force that moves an object away from something, the opposite to a pull force.
D: Here the man is applying force by pushing the cupboard away from him.
E: 1. If you hit a ball with a bat, factors depending how far it goes would be how much force you apply. If the harder and more force you hit it the ball will go further. If you apply less force and don't hit it as hard it wont go further.
E: 2. Some mechanical systems that use a push force might be a drill: Pushing it into the wood or something making a hole, Trampoline: By pushing down onto the trampoline to launch yourself up.
E: 3. The way a push force might become non contact is if you have two north pole magnets or two south pole magnets facing each other, by pushing one it will force the other to be pushed away/repel from the other one.
Pull
A: To pull something or another object is pulling something is to pull something else towards the object that is pulling, the opposite too push.When force brings an object closer, that is a pull.
E: 1. Yes, if you are pushing box away from you, by changing the force and pulling a box towards you you are turning it from a push to a pull.
D: The man is applying force by pulling the object closer to wards him.
Gravity is pulling the stone closer to the ground.
C: Pulling a door shut, a rug onto you, pulling on socks/ shoes eg.
B: Magnetism and gravity both create a puling force. If you have a small pin next to the magnet, the magnetic force will pull the pin closer to it until it attaches. Same with gravity, if you drop a rock then the gravitational pull will pull it down to the ground.
E: 2. Yes, a non-contact pull force can be a magnetism and gravity. Gravity: Pulling us humans down to the ground. Magnetism: A magnet pulling a paperclip.
E: A maniacal system that uses pulling could be something up like a pully. One heavy object goes on one side and is attached to a rope. On the other end a machine pulls the rope pulling the heavy object up into the air.
Normal
A: A normal force is a force that supports the weight of a object on a surface. A balanced force going up and down ( look at example below to make more sense).
D:
E: When walking ( applying normal force to the ground), placing a book on the table ( the table pushes upwards on the book, gravity pulls it down).
B: Fact: Normal forces don't exist unless objects are touching and are always at right angles to the surface. Its a balanced force.
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Non-Contact Forces
Electrostatics
C: Experiment 1: Rubbing a piece of cloth on to a balloon creating friction and electrostatic energy so when goes above head the hair attaches.
A:. Electrostatic is the build up of an electrical charge on the surface of any object. It occurs when there is a imbalance of positive and negatively charged atoms. All objects have these atoms.
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D: The field lines always begin on the positive charge and flow around to the negative charge. The arrows show what way the electricity is flowing.
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Gravity
C: Experiment 1: Dropping a tennis ball and trying to catch it. The force of the gravity pulls the ball to the ground.
A: Gravity is a type of force when everything is attracted to everything else. Gravity pulls any object to the ground (what goes up must come down).
E: The closer two planets are the higher the chance the gravitational force will bring them together. Along with that, the bigger the planets the more mass they carry making their gravitational pull stronger.
B: All objects with mass are attracted to each other. Gravity is always attracted never repulsive, the complete opposite of magnetic and electrostatics.
Did you know: Gravity is the weakest force!
D: Here is a image showing that if you drop a object such as a apple the earth and the apple will both move towards each other because they both have mass.
Magnetism
A: Magnetism is a combination of either cobalt, nickel, iron, or even all three in certain objects attracting other magnets to them selves. Only north and south magnets attract to each other. Never north and north or south and south. Magnetism is a non-contact force meaning it can pick up an object without touching it.
C: Experiment 1: When the paper clips go near the magnet they get attracted to it and attaches because of the magnetic pull from magnet.
B: Facts: Magnets always have two poles on either end, north and south even if you cut them in half.
The most powerful magnet in the universe is actually a star called a magnetar. They are so strong they can destroy planets.
D: This image shows magnetic field lines. The lines never cross and connect from one pole to the other. The arrows tell us which direction the magnetic field is traveling.
E: If you try to push two north poles or two south poles they will always repel each other.Not all material are magnetic. The three main ones are nickel, iron and metal.
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