- #1
sam2k2002
- 10
- 0
Homework Statement
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
Homework Equations
U_g = -(G*M*m)/r
v_escape = sqrt(2GM/r)
The Attempt at a Solution
I just plugged in the variables to the espace velocity equation and get 94km/s, but that's incorrect.