# Calculate the force of gravity between a newborn baby (mass=3kg) and the planet Mars (1 Viewer)

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#### LoveKnowledge

1. Calculate the force of gravity between a newborn baby (mass=3kg) and the planet Mars (mass=6.4 X 10^23 kg) when Mars is at its closest to Earth (distance=5.6 X 10^10 m).

2. F= G m1m2/d2

3. I got this far and I don't know how to break down the equation any further: F= G M m /R^2= 6.67300 × 10^-11 m^3 kg^-1 s^-2 *6.4 x 10^23 kg *3.00 kg/(8*10^10 m)^2

#### Redbelly98

Staff Emeritus
Homework Helper
Re: Calculate the force of gravity between a newborn baby (mass=3kg) and the planet M

I haven't checked all your numbers but it looks reasonable. Just calculate what the result is on your calculator.

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