Calculating Mass from Weight and Distance

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SUMMARY

The discussion focuses on calculating mass when weight and distance are provided, specifically in scenarios where the standard acceleration due to gravity (9.8 m/s²) is not applicable due to extreme distances from Earth's surface. Participants emphasize the use of Newton's law of universal gravitation, represented by the equation F_{g} = \frac{Gm_{1}m_{2}}{r^2}, to determine the gravitational force and subsequently the mass. The conversation highlights the necessity of understanding gravitational constants and variations in gravitational acceleration at significant altitudes.

PREREQUISITES
  • Understanding of Newton's law of universal gravitation
  • Familiarity with gravitational constant (G)
  • Knowledge of basic physics equations, particularly F=ma
  • Concept of gravitational acceleration variations with distance
NEXT STEPS
  • Research the gravitational constant (G) and its value
  • Learn how to calculate gravitational acceleration at various altitudes
  • Study the implications of distance on gravitational force
  • Explore advanced applications of Newton's law of gravitation in astrophysics
USEFUL FOR

Students studying physics, educators teaching gravitational concepts, and anyone interested in advanced calculations involving mass and gravitational forces at significant distances from Earth.

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Homework Statement



How can I find mass when weight and distance is given.(Note I can't use 9.8m/s^2 as my acceleration of gravity because the question is dealing distances that are extremely high from Earth's surface.And also how can i find the right acceleration at such heights?

Homework Equations



F=ma

The Attempt at a Solution


am stuck cos I know i can't use 9.8m/s^2.
 
Physics news on Phys.org
Have you come across Newton's theory of gravitation?
[tex]F_{g} = \frac{Gm_{1}m_{2}}{r^2}[/tex]
 

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