Name: gravity between masses and distance
Uploaded: 2023-09-22T11:49:18.000Z
Duration: 1 min 24 s
Channel: JoVE

K12 Standards

Louisiana Student Standards for Science

High School

Earth Science

Earth’s Place In The Universe

HS-ESS1-4

Newton's Law of Gravitational Attraction

A lei da atração gravitacional de Newton afirma que quando duas partículas de massas m1 e m2 são separadas pela distância r, elas se atraem com forças iguais e opostas.
A força de atração atua ao longo da linha que une as partículas e varia diretamente como o produto de suas massas e inversamente como o quadrado da distância entre elas, onde G é a constante universal conhecida como constante gravitacional.
A força de atração gravitacional exercida pela Terra sobre um objeto é o peso do objeto. É o produto da massa do objeto e da aceleração devido à gravidade, expressa em newton.
Separadores de gravidade, martelos de queda e transportadores de gravidade são algumas ferramentas mecânicas que funcionam com base no princípio da lei da gravitação de Newton.
Considere o processo de forjamento com martelo de queda. Aqui, o martelo de um peso específico é levantado a uma certa altura e depois deixado cair livremente.
Como a Terra tem uma forte atração gravitacional, o martelo sempre cai. A força criada por esta queda dá a forma necessária às peças de trabalho.

<ol>
	<li>Hibbeler, R.C. (2016). Engenharia Mecânica \u2012 Estática e Dinâmica. Hoboken, Nova Jersey: Pearson Prentice Hall. pág. 7</li>
	<li>Cerveja, F.P.; Johnston, E.R.; Mazurek, D.F; Cromwell, PJ e Self, BP (2019). Mecânica vetorial para engenheiros \u2012 estática e dinâmica. Nova Iorque: McGraw-Hill. pág. 4 e 5</li>
	<li>Oliveira, J.L.; Kraige, L.G. e Bolton, J.N. (2020). Engenharia Mecânica \u2012 Estática. Hoboken, Nova Jersey: John Wiley. pág. 7 e 8</li>
</ol>

a lei da atração gravitacional de newton

Isaac Newton estabeleceu a universalidade da lei da atração gravitacional com base em evidências empíricas e raciocínio indutivo. Ele publicou seu trabalho em Philosophiae Naturalis Principia Mathematica (“Principia”) em 5 de julho de 1687.

A lei da atração gravitacional de Newton é uma lei fundamental da física que governa a atração entre objetos. Ela afirma que a magnitude da força gravitacional entre quaisquer dois objetos é proporcional às suas massas e inversamente proporcional ao quadrado da distância entre eles.

A gravidade é mais forte entre objetos com maior massa. Todo par de corpos experimenta forças gravitacionais. Uma das aplicações mais ubíquas dessa lei é o nosso entendimento do movimento dos planetas no sistema solar. A força gravitacional entre os planetas e o sol é responsável pelo seu movimento ao redor do sol. Também explica fenômenos como as marés causadas pela força gravitacional da lua na Terra.

Outro exemplo em que essa lei é usada é no design de montanhas-russas. Os carrinhos das montanhas-russas são postos em movimento por meio de uma subida com corrente, que fornece a força inicial para subir a primeira inclinação íngreme. Uma vez no topo, a gravidade puxa o carrinho pela pista, passando por uma série de curvas, loopings e quedas.

A lei universal da gravitação é significativa porque tem sido bem-sucedida em explicar muitos fenômenos, como o efeito que diferentes objetos no universo macroscópico têm uns sobre os outros, como a gravidade é responsável pelo peso de um corpo e nos mantém no chão, como a lua se move em torno da Terra, como ocorre o movimento planetário, a geração de forças de maré, entre outros.

A lei da atração gravitacional de Newton

Sir Isaac Newton estabeleceu a universalidade da lei da atração gravitacional com base em evidências empíricas e raciocínio indutivo. Ele publicou seu ...

Education

JoVE Core

Mechanical Engineering

Engenharia Mecânica

Unit 1

Unidade 1

An Introduction to Statics

Uma Introdução à Estática

KEY TERMS AND CONCEPTS

TERMOS-CHAVE E CONCEITOS

gravity between masses and distance

Newton’s law of gravitational attraction describes how gravity acts between two objects. Sir Isaac Newton built this law from empirical evidence and inductive reasoning. He published it in Philosophiae Naturalis Principia Mathematica, or the Principia, on July 5, 1687.

The law says that the gravitational force between any two objects depends on their masses and their distance apart. The force is proportional to mass and inversely proportional to the square of the distance between the objects. In simple terms, larger masses create stronger gravity, while greater distance weakens the force.

Every pair of bodies experiences gravitational force. This law helps explain the motion of the planets in the solar system. The pull between the Sun and the planets keeps them moving around the Sun.

Newton’s law also explains tides on Earth. The Moon’s gravitational force on Earth produces tidal forces. The same idea helps describe roller coasters, too. A chain lift hill gives the cart its initial motion up the first steep hill, and then gravity pulls it down through turns, loops, and drops.

This universal law of gravitation is important because it explains many large-scale effects in the macroscopic universe. It accounts for a body’s weight and helps keep us on the ground. It also describes the Moon’s motion around Earth, planetary motion, and the generation of tides.

Gravity Between Masses and Distance

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newton's law of gravitational attraction

Newton’s law of gravitational attraction describes how gravity acts between two objects. Sir Isaac Newton built this law from empirical evidence and inductive reasoning. He published it in Philosophiae Naturalis Principia Mathematica, or the Principia, on July 5, 1687. The law says that the gravitational force between any two objects depends on their masses and their distance apart. The force is proportional to mass and inversely proportional to the square of the distance between the objects.

units of measurement

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Explore Newton’s law of gravitation, how mass and distance affect gravity, and why it explains planets, tides, and roller coasters.

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O JoVE Core Mechanical Engineering oferece vídeos animados concisos e de fácil compreensão que abrangem tópicos-chave como equilíbrio, forças, análise de treliças e mecânica estrutural. Explore suas aplicações no mundo real e observe esses conceitos em ação por meio de experimentos conduzidos por cientistas.

mechanical engineering

south-carolina-college-and-career-ready-science-standards

South Carolina College and Career Ready Science Standards

Physics

motion-and-stability-forces-and-interactions

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P-PS2-4

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HS-ESS1-2

Communicate scientific ideas about the way stars, over their life cycle, produce elements.  Emphasis is on the way nucleosynthesis, and therefore the different elements created, depends on the mass of a star and the stage of its lifetime .

HS-ESS1-3

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HS-ESS1-5

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HS-ESS1-6

Gravity Between Masses and Distance

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