(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

You have been visiting a distant planet. Your measurements have determined that the planet's mass is twice that of earth but the free-fall acceleration at the surface is only one-fourth as large. Radius = 1.8*10^7meters

Mass = 1.19484 × 10^25 kilograms

2. Relevant equations

U_g = -(G*M*m)/r

v_escape = sqrt(2GM/r)

3. The attempt at a solution

I just plugged in the variables to the espace velocity equation and get 94km/s, but thats incorrect.

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# Homework Help: ~Gravity on a distant planet

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