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kow [346]
3 years ago
8

where would the spaceprobe experience the strongest net (or total) gravitional force exerted on it by Earth and Mars

Physics
1 answer:
Arte-miy333 [17]3 years ago
5 0

Answer:

r = 41.1 10⁹ m

Explanation:

For this exercise we use the equilibrium condition, that is, we look for the point where the forces are equal  

                  ∑ F = 0

                  F (Earth- probe) - F (Mars- probe) = 0

                  F (Earth- probe) = F (Mars- probe)

Let's use the equation of universal grace, let's measure the distance from the earth, to have a reference system

the distance from Earth to the probe is        R (Earth-probe) = r

the distance from Mars to the probe is        R (Mars -probe) = D - r

where D is the distance between Earth and Mars

                   

                 G  \ \frac{m \ M_{Earth}}{r^2} = G  \ \frac{m \ M_{Mars}}{(D-r)^2}

                 M_earth (D-r)² = M_Mars r²

                 (D-r) = \sqrt{ \frac{M_{Mars}}{ M_{Earth}} }    r

                  r ( 1 + \sqrt{ \frac{M_{Mars}}{M_{Earth}} }) = D

                  r = \frac{D}{ 1+ \sqrt{\frac{M_{Mars}}{ M_{Earth}} } }

We look for the values ​​in tables

                  D = 54.6 10⁹ m (minimum)

                  M_earth = 5.98 10²⁴ kg

                  M_Marte = 6.42 10²³ kg = 0.642 10²⁴ kg

                   

let's calculate

                  r = 54.6 10⁹ / (1 + √(0.642/5.98)  )

                  r = 41.1 10⁹ m

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