Gravitation
Himachal Pradesh Board · Class 9 · Science
Practice quiz for Gravitation — Himachal Pradesh Board Class 9 Science. MCQs and questions with answers to test your preparation.
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What is the force that attracts all objects in the universe towards each other called?
The value of acceleration due to gravity on Earth is approximately:
When an object falls freely under gravity, it experiences:
Weight of an object is:
Sample Questions
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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