Posted by **Rebecca** on Saturday, October 1, 2011 at 11:24pm.

Suppose that you travel to a planet that has 4 times the Earth's mass and 4 times the

Earth's radius. Calculate how much more or less you would weigh on this planet

compared to your weight on Earth. Express your answer as a factor or fraction of

your weight on Earth. Show all work.

- Astronomy -
**drwls**, Sunday, October 2, 2011 at 7:39am
weight W = M g

g , and the weight, are proportional to M/R^2

M/R^2 is 4Me/(16 Re^2) = (1/4) Me/Re^2

on the new planet.

Me = earth mass

Re = earth radius

Weight will be four times less on the new planet

- Astronomy - clarification -
**drwls**, Sunday, October 2, 2011 at 10:44am
The "M" in the first equation is the object mass, not the earth mass. I should have used m.

The answer is the same

## Answer this Question

## Related Questions

- astronomy - 6. Suppose that you travel to a planet that has 4 times the Earth’s ...
- Astro - Suppose you lived on a planet with the same radius as the Earth, but it ...
- astronomy - A body has four times the mass of the Earth but its radius is two ...
- physics - A planet has a radius of about 0.85 times Earth's radius and a mass ...
- Physics - I have a hard time solving this problem. The weight of an object at ...
- functions - A person’s weight, w, on a planet of radius r is given by: w= kr^-2 ...
- college - A spaceship lands on the planet whose radius is 5 times that of planet...
- Chemistry - A newly discovered giant planet has an aver- age radius 12 times ...
- Physics - Suppose a planet is discovered orbiting a distant star with 13 times ...
- physics - Suppose a person weighs 160 pounds on Earth. How much would that ...

More Related Questions