How much will he weigh on a different planet

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SUMMARY

A space traveler weighing 500 N on Earth will weigh approximately 111.11 N on a planet with a radius three times that of Earth and a mass twice that of Earth. The calculation utilizes the formula for gravitational force, F = G(m1 * m2) / r^2, where G is the gravitational constant, m1 is the mass of the traveler, m2 is the mass of the planet, and r is the radius of the planet. The increased radius decreases the weight due to the inverse square relationship, while the increased mass increases the weight, resulting in a net decrease in weight on the new planet.

PREREQUISITES
  • Understanding of gravitational force and the formula F = G(m1 * m2) / r^2
  • Knowledge of the concepts of mass and radius in relation to gravitational attraction
  • Basic algebra skills for manipulating equations
  • Familiarity with the gravitational constant (G)
NEXT STEPS
  • Research the effects of varying mass and radius on gravitational force
  • Learn about the gravitational constant (G) and its significance in physics
  • Explore the concept of weight on different celestial bodies
  • Study the relationship between mass, weight, and gravitational acceleration
USEFUL FOR

Students studying physics, particularly those focusing on gravitational forces and celestial mechanics, as well as educators seeking to explain weight variations on different planets.

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Homework Statement



A space traveler weighs 500 N on earth. What will the traveler weigh on another planet whose radius is three times that of Earth and whose mass is twice that of earth?

answer in Newtons

Homework Equations





The Attempt at a Solution




i think the formula looks something like this, F = G(m1 * m2) / r^2 but I'm wrong somehow, also there are missing variables. This problem does not look very hard, just need help setting it up.
 
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You could do it that way, but you don't actually have to do the numbers.

You are given two factors affecting your weight. What effect does each of them (individually) have generally/algebraically on your weight (as related to Earth=1)?
 

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