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Force of Gravity • What: Force of attraction between 2 objects with mass • Where: Any object that has mass • FBD opposite of normal • When: • All the time • Affected by distance and mass • M Increases G increases • D increases G decreases • How: Gravity that keeps you on Earth is applied (weight) • Increase GPE when height increase • Who: Affects objects with Mass Planets, humans, etc. Force of Magnetism • What: An attraction or repulsive force between a magnetic force • Where/Who: Earth naturally has a magnetic pull and the strongest part is at the poles. This is where it has the highest potential energy. • When: It is located in the magnetic field • It has opposite charges attract • Same charges repel • How: Negative and positive poles attract • Negative and negative repel • Positive and positive repel -Field or area of influence - Poles are North (+) and South (-) Electrical Force • What: Between two charged objects that repel or attract • Where: Everyday places (lights, appliances, etc) • When: Everyday electromagnetism • How: Complete Circuit, Generator converts (ME to EE) and goes to power lines in House • Force Field/area of influence • Static electricity: Only electrons get transferred to change a charge losing electrons = + charge and gaining electrons = - charge • Electrons (-), Protons(+), Neutrons (0) • Electromagnetism (circuit, insulator, conductor, energy source) What: Force that resists objects motion Where: when two objects that are touching Opposite of the applied force When: Stops or slows motion 2 types Sliding: contact with motion Static: Contact force that causes no motion What: Force that pushes up on something When: Something is on a surface How: When you want something held up Where: Opposite of gravity How: Feel heat Air resistance Feel and see static electricity What: Force that is acting on an object How: Exerting a force on an object Underneath an object that is getting held up Where: Opposite of friction When: Stops, slows, starts or accelerate motion • Force of attraction between any objects with mass • Works with inertia to create orbital paths • PE= mgh • Force of attraction= mxm/dd • Force across Earth Naturally • North and South Pole • Force between magnetic material • Flows naturally from North to the south pole • Field/Region of influence • Force of attraction • Non-contact forces- can see their effects but not • Force of repulsion and attraction the actual force • Attracting- PE increases • Positive and Negative charges when distance increases • Electromagnet• Special kind of applied Complete circuit to force magnetize metal • When in motion all have KE • Force between electrically charged objects • Static electricity • Motors EME • Generators MEE