Flashcards in Gravitation Deck (11):

1

## What is the equation for Newton's Law of Gravitation?

### Fg= GM1M2/R^2

2

## What is Newton's Law of Gravitation also referred to as?

### An inverse squared law; ie. If the radius is doubled, the force would be 1/4

3

## What is the acceleration of a mass near earth's surface? (Me= earth's mass, Re= earth's radius)

###
a=GMe/Re^2

-9.8 m/s^2

4

## What is the acceleration due to gravity independent to?

### The mass of a falling object

5

## What is the equation for gravitational potential energy? (Me= earth's mass, Re= earth's radius)

### Pe=-GM1Me/Re

6

## What is the equation for escape velocity? (Me= earth's mass, Re= earth's radius)

###
Ke=Pe

1/2mv^2=-GM1Me/Re

v=sqrt(2GMe/Re)

7

## What is Escape Velocity?

### The velocity of an object when it leaves earth's surface

8

## What is Orbital Velocity?

### The velocity of an object in circular orbit with earth

9

## What is the equation for orbital velocity? (Me= earth's mass, Re= earth's radius)

###
Fc=Pe

mv^2/R=-GM1Me/Re

v=sqrt(GMe/Re)

10

## What is both escape and orbital velocity dependent on?

### The earth's mass, not the mass of the object

11