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**1. Homework Statement**

Pat's mass is 65.5 kg on Earth's surface. What would Pat's weight be at an altitude twice the radius of the Earth

**2. Homework Equations**

Fg=G(m1)(m2)/r^2

G = 6.67X 10^-11

F=ma

We are not given the numerical radius of the Earth

**3. The Attempt at a Solution**

I tried to manipulate the formula a bit:

(using the gravitational law)

Fg = (65.5)x/ 2^2

And that got me nowhere.

I also know the answer is 71.4N but how you get there is what I don't understand.