Gravitation and Newton's Law Quiz

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.

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.