The radius of earth is about 6400 km and that of mars is 3200 km. The mass of earth is about 10 times mass of mars. An object weighs 200 N on the surface of earth. Its weight on the surface of mars will be
The mass of Earth is approximately 5.97 x 10²⁴ kilograms, influencing its gravitational force and effects on nearby objects.
Class 11 Physics
Gravitation
CBSE EXAM 2024-25
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The weight of an object is the force it experiences due to gravity, which depends on the gravitational field of the celestial body it is on. The weight of an object on a planet’s surface is directly proportional to the mass of the planet and inversely proportional to the square of the planet’s radius.
In this case, the object weighs 200 N on Earth. The Earth’s radius is approximately 6400 km, and its mass is about 10 times that of Mars. Mars has a smaller radius of approximately 3200 km. The gravitational pull experienced by the object on Mars depends on the ratio of Mars’ mass and radius compared to Earth’s. Since Mars is less massive and smaller in size, the gravitational force on its surface is weaker.
Taking into account the relative differences in mass and radius, the weight of the object on Mars is calculated to be 80 N. This is significantly less than its weight on Earth due to Mars’ smaller mass and lower surface gravity. This concept highlights how weight varies on different planets, even though the object’s mass remains the same, showcasing the influence of planetary characteristics on gravitational forces.