Newton's Law of Universal Gravitation

Newton's Law of Universal Gravitation

Universal Forces Four Universal Forces: Strong Nuclear Force Weak Nuclear Force Electromagnetic

Force Gravitational Force Strong Nuclear Force Force inside nucleus that holds protons together. Like charges repel and

this force overcomes that to hold it together Weak Nuclear Force Force that is responsible for radioactive decay Types of decay

-alpha: release of alpha particle (He nucleus) -beta: release of electron -gamma: release of light Mass Energy Equivalence

E=mc2 Mass and energy can be converted into each other. When mass decreases in a nuclear reaction (fission or fusion) energy is given off Electromagnetic Force

Waves that transfer energy Responsible for light, communications, electricity and magnetism

Newtons Law of Universal Gravitation Physics Weakest of all forces

Long range force All objects in the universe are attracted to all other objects in the universe. The are affected by two factors: 1. mass 2. distance

Newton and Gravity Besides the 3 laws of motion Newton came up with the Law of Gravitation between objects Every particle in the universe exerts an attractive force on every other particle. This law means that every object that has mass exerts a gravitational force on other objects that

enter its gravitational field If the cannonball were in orbit around the planet, what would it take to bring it back from orbit? Newtons Discovery

If objects are spread far apart the force of gravity will decrease. If the objects are brought closer together the force of gravity will increase Distance & Force are Inversely related If the mass of one of the objects

increases then the gravitational force will also increase. Mass & Force are Directly Related The Law of Universal Gravitation

m1m2 FG G 2 d G = 6.67 x 10-11 Nm2/kg2 (universal gravitation constant ) FG = Force of Gravity between two objects (Newtons)

m = mass of the objects (kg) d = distance between objects (m) Inverse Square Law What does this mean? If the distance is

doubled then the Gravitational force will decrease by 1/4th of what it was. If the distance is halved then the Gravitational force will be 4 times as

great. A.K.A. Inverse Square Law m1m2 FG G 2 d

How Force is affected Calculate the Force between you and the Earth using the following: mearth = 6 x 1024 kg rearth = 6.4 x 106 m

Calculate your mass in kilograms Solve for the Gravitational force between you and the earth. How does this value compare to your weight in Newtons? Is there a Gravitational force

between you and your neighbor? Take measurements and find out using the Law of Gravitation. Einstein and Gravity In the early 20th century, Einstein took Newtons

concepts of gravity and proposed his theory of General Relativity. Einstein accurately described the deflection of light from massive objects. An eclipse in 1919 demonstrated what Einstein predicted- light is bent by gravity.

Recently Viewed Presentations

  • UNIT #4  BECOMING A WORLD POWER LESSON #2

    UNIT #4 BECOMING A WORLD POWER LESSON #2

    Is war a good idea? What happened next? (147 - last two paragraphs) What does JINGOISM look like? 1898 - What did congress do? (top of p. 148) What was Spain's response? The Maine exploded. Some Americans blamed the Spanish....
  • Java Server Pages - Binghamton

    Java Server Pages - Binghamton

    Java Server Pages CS-422 What are JSPs A logical evolution of java servlets most servlets dynamically create HTML and integrate it with some computational and database output Servlets on their own had some pretty stiff competition form PHP, ASP and...
  • Pronoun Notes - Humble Independent School District

    Pronoun Notes - Humble Independent School District

    Pronoun Notes The cases of pronouns are: Subject Pronouns Object Pronouns Possessive Pronoun Subject pronouns may only be used for SUBJECTS or PREDICATE NOMINATIVES (noun or pronoun that refers back to the subject). Object pronouns are used as Direct Objects,...
  • Slide 1

    Slide 1

    The Saskatchewan Walleye Trail (SWT) In the early 1990's CFE's were becoming popular and there was a desire to start a circuit that would track an angler's success through a series of events. In 1993, Michael Snook organized a group...
  • IE 472 - Seminar in Industrial Engineering Practice

    IE 472 - Seminar in Industrial Engineering Practice

    Neuroscientist at McGill University in Montreal. Dean at Minerva Schools in San Francisco. Research focuses on pattern processing in the brain. Levitin'sStressful Story. A few years ago, he had just driven home, it was around midnight in the dead of...
  • Click to begin. Choose a category. You will

    Click to begin. Choose a category. You will

    Ideas or information intentionally spread to harm or help a cause What is propaganda? Hired soldier What is a mercenary? Privately owned ship outfitted with weapons What is a privateer? Category: Final Jeopardy Militias Militia that was essential to Patriot...
  • Slide 1

    Slide 1

    Strategy World Class Quality Management PROFITABLE SALES GROWTH Policy Deployment CUSTOMER SATISFACTION Quality & Timeliness of Services VOICE OF CUSTOMER
  • Semester 2 final Review

    Semester 2 final Review

    ALLUsion!! What literary term is represented below? ... What literary term represents the definition below? a poetic form in which a single character, addressing a silent auditor at a critical moment, reveals himself or herself and the dramatic situation.