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Questions and Answers
What does Newton's universal law of gravitation state?
What is the formula to find the magnitude of gravitational force between the earth and an object on the surface of the earth?
What is acceleration due to gravity?
What is meant by free fall?
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What is the value of average acceleration due to gravity on the earth's surface?
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What does Newton's universal law of gravitation state?
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What is the meaning of free fall?
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What is acceleration due to gravity?
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What is the formula to find the magnitude of gravitational force between two objects?
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What is the value of average acceleration due to gravity on the earth's surface?
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Study Notes
Newton's Universal Law of Gravitation
- States that every particle attracts every other particle with a force proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
- Formula: ( F = \frac{G \cdot m_1 \cdot m_2}{r^2} ) where ( F ) is the gravitational force, ( G ) is the gravitational constant, ( m_1 ) and ( m_2 ) are the masses, and ( r ) is the distance between their centers.
Gravitational Force on Earth
- To find the gravitational force between the Earth and an object on its surface, use the formula: ( F = m \cdot g ) where ( m ) is the object's mass and ( g ) is the acceleration due to gravity.
Acceleration Due to Gravity
- Refers to the rate at which an object accelerates towards the Earth due to gravitational force.
- Average value on Earth’s surface: approximately ( 9.81 , \text{m/s}^2 ).
Free Fall
- Describes the motion of an object falling solely under the influence of gravity, with no other forces acting (such as air resistance).
- During free fall, all objects accelerate uniformly at the rate of ( 9.81 , \text{m/s}^2 ).
Average Acceleration Due to Gravity on Earth's Surface
- Standard value is ( 9.81 , \text{m/s}^2 ), indicating how quickly an object speeds up when falling.
Gravitational Force Between Two Objects
- Gravitational force can be calculated using the formula: ( F = \frac{G \cdot m_1 \cdot m_2}{r^2} ) applicable to any two masses, demonstrating the universal applicability of gravity.
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Description
Test your knowledge of gravitation and Newton's universal law with this quiz. Learn about the formula to calculate the magnitude of gravitational force between the earth and an object on its surface.
