Universal Law of Gravitation in Physics
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Universal Law of
Gravitation
Seo
Physics
Universal Gravitation
What is Universal Gravitation?
Force which is directly proportional to the product of
two masses
Equation?
G = universal gravitation constant
G = 6.67 x 10
-11
N m
2
/ kg
2
m = mass of an object
r = distance between the center of mass of the two
objects
Gravitational Force
What is a Gravitational Force?
Any two masses that exert on each other
Example of action-reaction pair
Practice
A 1 kg object is located at a distance of 6.4 x10
6
m from the
center of a larger object whose mass is 6.0 x 10
24
kg. Find
the gravitational attraction between them.
DIY
Two spherical objects have masses of 1.5 x 10
5
kg and
8.5 x 10
2
kg. Their centers are separated by a distance
of 2500 m. Find the gravitational attraction between them.
Gravitational Field
What is Gravitational Field?
Strength of field where there is a force of attraction in different
planets
Equation?
g = G m/ r
2
m= mass of planet
g = gravitational field strength
r = radius of planet
G = universal gravitation constant
= 6.67 x 10
-11
N m
2
/ kg
2
Practice
Compute g at a distance of 4.5 x 10
7
m from the center of a
spherical object whose mass is 3.0 x 10
23
kg.
DIY
Compute g for the surface of the sun. Its radius is 7.0 x10
8
m and
its mass is 2.0 x 10
30
kg.
Important Concepts
F
g
exists between two masses, regardless of:
the medium separating them
their size or composition
Explore the concept of Universal Law of Gravitation in Physics, including gravitational force, gravitational attraction between objects, and gravitational field strength. Learn to calculate these values with equations and examples showcasing the fundamental principles of gravity.
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Presentation Transcript
Universal Law of Gravitation Seo Physics
Universal Gravitation What is Universal Gravitation? Force which is directly proportional to the product of two masses Equation? G = universal gravitation constant G = 6.67 x 10-11 N m2/ kg2 m = mass of an object r = distance between the center of mass of the two objects
Gravitational Force What is a Gravitational Force? Any two masses that exert on each other Example of action-reaction pair
Practice A 1 kg object is located at a distance of 6.4 x106 m from the center of a larger object whose mass is 6.0 x 1024 kg. Find the gravitational attraction between them.
DIY Two spherical objects have masses of 1.5 x 105 kg and 8.5 x 102 kg. Their centers are separated by a distance of 2500 m. Find the gravitational attraction between them.
Gravitational Field What is Gravitational Field? Strength of field where there is a force of attraction in different planets Equation? g = G m/ r2 m= mass of planet g = gravitational field strength r = radius of planet G = universal gravitation constant = 6.67 x 10-11 N m2/ kg2
Practice Compute g at a distance of 4.5 x 107m from the center of a spherical object whose mass is 3.0 x 1023 kg.
DIY Compute g for the surface of the sun. Its radius is 7.0 x108 m and its mass is 2.0 x 1030 kg.
Important Concepts Fg exists between two masses, regardless of: the medium separating them their size or composition
