Final answer:
The formula to solve for M₁ in terms of Fg, G₂, and r is M₁ = Fg * r² / (G₂ * M₂).
Step-by-step explanation:
The formula to solve for M₁ in terms of Fg, G₂, and r in the equation Fg = GM₁M₂/r² is:
M₁ = Fg * r² / (G₂ * M₂)
Where:
- Fg is the gravitational force
- G₂ is the gravitational constant
- r is the separation between the two bodies
- M₂ is the mass of the second body
Substituting these values into the formula will allow you to solve for M₁.