anonymous
  • anonymous
Calculate the force that earth's gravity exerts on a 1 kg mass at the following locations: a) On the surface of the earth b) 3 km above earth's surface c) 300 km above earths surface d) 30,000 km above earths surface Please help me with the answers, I wasnt here when we learned this.
Physics
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
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anonymous
  • anonymous
we all know when the exerts force on the body it becomes weight so and weight is a force so force = m*g whereas g= G * M / d^2 G= gravitational constent M = mass of the earth d = distence of the earth from centre then the above formula becomes f = G*M*m/d^2 as f= mg m*g= G*M*m/d^2 m on both sides will cancel each other g = G*M/d^2 1 where value of G =6.673 * 10^-11 Nm^2 value of M = 5.98 * 10 ^24 kg and value of d at surface of earth is = 6.38 * 10^ 6 you can find the value by using this formula g=g = G*M/d^2
shamim
  • shamim
3km above earth surface g=GM/(R+h)^2 h=3000m
anonymous
  • anonymous
R = 6400 km

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anonymous
  • anonymous
Ohhhh I'll use R=6400 with shamims equation?

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