Gravitation — Important Questions
Madhya Pradesh Board · Class 9 · Science
30 important questions from Gravitation for Madhya Pradesh Board Class 9 Science, with answers. Part of the Madhya Pradesh Board Class 9 Science syllabus.
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Important Questions from Gravitation
According to Newton's universal law of gravitation, the gravitational force between two objects is:
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Directly proportional to the product of their masses, Inversely proportional to the square of distance between them
Newton's law states that F = GM₁M₂/r². This means force increases with mass and decreases with the square of distance.
Mass of an object:
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Remains constant everywhere, Is a measure of inertia
Mass is constant everywhere and measures the amount of matter in an object and its inertia. Weight changes with location, not mass.
An object's weight on the Moon compared to Earth is:
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One-sixth
The Moon's gravity is about 1/6th of Earth's gravity, so an object weighs 1/6th of its Earth weight on the Moon.
Pressure is defined as:
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Force ÷ Area
Pressure = Force/Area or Thrust/Area. It measures how much force is applied per unit area.
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