Newtons Law Of Universal Gravitation Flashcards
What is so good about the law of gravity
The truly remarkable thing about the law of gravity is that it is applied to all objects. The greater the mass of an object, the more it pulls other objects
How does the gravitational pull of an object work in relation to its mass
Every object has mass, which is simply a way for us to know how much matter it contains. The gravitational pull of an object increases as its mass increases.
What is mass
the amount of matter an object possesses.
What it weight
the gravitational force the Earth exerts on any object on or near its surface.
What is Newtons law of universal gravitation
each particle in the universe attracts every other particle with a gravitational force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres.
How must we write mass and distance
mass = kilograms
distance = metres
What kind of object will we observe
Planets and moons (the Astros)
From where will distance be measured
distance is measured from the centre of one object to the centre of the other object
What is newtons law of universal gravitation in our solar system
Moon orbits the Earth and that the Earth orbits the Sun, therefore there must be a force of attraction between the Earth and the Sun. Here’s a mind-blowing thought: you are attracting the Earth, and even more mind-blowing is that you are attracting the Sun. Not with a big force, but that is what Newton’s law of universal gravitation is all about
So how does mass affect acceleration
The mass of the person cancels, which means it does not affect the acceleration of the Earth on the person.
do we need to know the mass of an object in order to work out its gravitational pull
to work out the acceleration that objects feel towards, for example, a planet, you only need to know the mass of the planet, and how far you are from its centre. It doesn’t depend at all on the mass of the object that is being attracted.
What does r stand for in an equation
r = distance
What does Newtons law of gravitation state
that each particle in the universe attracts every other particle with a gravitational force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres.
how can we describe the The relationship between force and distance
that as thedistance increases, theforce betweenthe masseswill decrease
what is the relationship between force and distance officially called
ainverse square function.
