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## Homework Statement

What is the flux on a solar sail per square meter, if it orbits the Sun at 3 AU. Flux at 1 AU is 1.36 KW/square meter

## Homework Equations

Flux goes as 1/r^2

## The Attempt at a Solution

Flux at 3 AU will be 1.36/3^2 = 1.36/9 = 0.15 KW/square meter

I can't figure out how to relate this to the force though?

Any help would be appreciated.

*This is practise for a test not an assignment queston