# Help on Gravity stuff

## Homework Statement

Use Newton's law of universal gravitation to find an equation where x is equal to an object's distance from Earth's center, and y is its acceleration due to gravity. Use a graphing calculator to graph this equation, using 6400-6600 km as the range for x and 9-10 m/s2 as the range for y. The equation should be of the form y = c(1/x2).
(a) Trace along this graph and find y at sea level, 6400 km.

(b) Trace along this graph and find y on top of Mt. Everest, 6410 km.

(c) Trace along this graph and find y in a typical satellite orbit, 6500 km.

(d) Trace along this graph and find y in a much higher orbit, 6600 km.

i got no idea how to solve any help or the answers would help greatly

For a start you could read
http://csep10.phys.utk.edu/astr161/lect/history/newtongrav.html

G= universal gravitational constant
M = mass of earth (a constant)
m = mass of your object (a constant)
g = gravitational acceleration experienced by the object (a variable)
r = distance of object from the centre of the Earth (a variable)

G*M*m/r*r = m*g

<< complete solution deleted by berkeman >>

Last edited by a moderator:
The text passage contains a series of questions related to using Newton's law of universal gravitation to find the acceleration due to gravity at different distances from the Earth's center. The questions are part of a homework problem, and the student is asking for help or answers.
multiple_questions
Given a text passage, determine:
    1. If it contains a mathematical question (including word problems or calculations)
    2. If an answer to that mathematical question is provided in the text

First, describe the content structure you found in 1-2 sentences.

Then provide your analysis in the following format:
TYPE: <one of the following values>
- NO_QUESTION
- SINGLE_QUESTION
- SINGLE_QUESTION_WITH_ANSWER
- MULTIPLE_QUESTIONS
- MULTIPLE_QUESTIONS_WITH_ANSWERS
system
# Help on Gravity stuff

## Homework Statement

Use Newton's law of universal gravitation to find an equation where x is equal to an object's distance from Earth's center, and y is its acceleration due to gravity. Use a graphing calculator to graph this equation, using 6400-6600 km as the range for x and 9-10 m/s2 as the range for y. The equation should be of the form y = c(1/x2).
(a) Trace along this graph and find y at sea level, 6400 km.

(b) Trace along this graph and find y on top of Mt. Everest, 6410 km.

(c) Trace along this graph and find y in a typical satellite orbit, 6500 km.

(d) Trace along this graph and find y in a much higher orbit, 6600 km.

i got no idea how to solve any help or the answers would help greatly

For a start you could read
http://csep10.phys.utk.edu/astr161/lect/history/newtongrav.html

G= universal gravitational constant
M = mass of earth (a constant)
m = mass of your object (a constant)
g = gravitational acceleration experienced by the object (a variable)
r = distance of object from the centre of the Earth (a variable)

G*M*m/r*r = m*g

<< complete solution deleted by berkeman >>

Last edited by a moderator:
user
The text passage contains a series of questions related to using Newton's law of universal gravitation to find the acceleration due to gravity at different distances from the Earth's center. The questions are part of a homework problem, and the student is asking for help or answers.

TYPE: MULTIPLE_QUESTIONS