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Earth radius

Gravity Review

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Physics
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Physics
Outer space
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Gravity & Circular Motion Review The radius of the earth is about 6400 km. What would be the earth's gravitational attraction on 75 kg astronaut in an orbit 6400 km above the earth's surface. The mass of Mars is about 6.6 x 1023 kg, and the acceleration due to gravity is 3.7 m/s2. What is the radius of Mars? The earth's radius is 6400 km. A 25 kg mass is taken 201 km above the earth's surface. What is the object's mass at the height? What is the weight of the object at this height? What is the acceleration due to gravity at this height? The radius of a planet is 3400 km. If an object weighs 550 N at the surface of the planet, what is its weight 12 km above the surface? 210 km above the surface?
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