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- https://phys.libretexts.org/Courses/Joliet_Junior_College/JJC_-_PHYS_110/07%3A_PhET_Simulations/7.15%3A_PhET-_Gravity_and_OrbitsMove the sun, earth, moon and space station to see how it affects their gravitational forces and orbital paths. Visualize the sizes and distances between different heavenly bodies, and turn off gravit...Move the sun, earth, moon and space station to see how it affects their gravitational forces and orbital paths. Visualize the sizes and distances between different heavenly bodies, and turn off gravity to see what would happen without it!
- https://phys.libretexts.org/Learning_Objects/Visualizations_and_Simulations/PhET_Simulations/PhET%3A_Gravity_Force_LabVisualize the gravitational force that two objects exert on each other. Adjust properties of the objects to see how changing the properties affects the gravitational attraction.
- https://phys.libretexts.org/Courses/Joliet_Junior_College/Physics_201_-_Fall_2019v2/Book%3A_Custom_Physics_textbook_for_JJC/07%3A_Applications_of_Newton/7.15%3A_Newtons_Law_of_Universal_GravitationObjects with mass feel an attractive force that is proportional to their masses and inversely proportional to the square of the distance.
- https://phys.libretexts.org/Courses/Joliet_Junior_College/JJC_-_PHYS_110/07%3A_PhET_Simulations/7.16%3A_PhET-_Gravity_Force_LabVisualize the gravitational force that two objects exert on each other. Adjust properties of the objects to see how changing the properties affects the gravitational attraction.
- https://phys.libretexts.org/Courses/Joliet_Junior_College/Physics_201_-_Fall_2019/Book%3A_Physics_(Boundless)/6%3A_Applications_of_Newton/6.15%3A_Newtons_Law_of_Universal_GravitationObjects with mass feel an attractive force that is proportional to their masses and inversely proportional to the square of the distance.
- https://phys.libretexts.org/Bookshelves/University_Physics/Physics_(Boundless)/5%3A_Uniform_Circular_Motion_and_Gravitation/5.5%3A_Newtons_Law_of_Universal_GravitationObjects with mass feel an attractive force that is proportional to their masses and inversely proportional to the square of the distance.
- https://phys.libretexts.org/Courses/Prince_Georges_Community_College/General_Physics_I%3A_Classical_Mechanics/64%3A_The_Standard_Model/64.03%3A_ForcesSome physicists believe that it may be possible to show that all four forces (including gravity) are aspects of a single underlying force, and covered by a theory called the "Theory of Everything". Su...Some physicists believe that it may be possible to show that all four forces (including gravity) are aspects of a single underlying force, and covered by a theory called the "Theory of Everything". Such a theory (which is essentially a grand unified theory plus gravity) has not yet been found, nor is it known whether such a theory even exists.
- https://phys.libretexts.org/Learning_Objects/Visualizations_and_Simulations/PhET_Simulations/PhET%3A_Gravity_and_OrbitsMove the sun, earth, moon and space station to see how it affects their gravitational forces and orbital paths. Visualize the sizes and distances between different heavenly bodies, and turn off gravit...Move the sun, earth, moon and space station to see how it affects their gravitational forces and orbital paths. Visualize the sizes and distances between different heavenly bodies, and turn off gravity to see what would happen without it!
- https://phys.libretexts.org/Courses/Prince_Georges_Community_College/PHY_1030%3A_General_Physics_I/05%3A_Uniform_Circular_Motion_and_Gravitation/5.5%3A_Newtons_Law_of_Universal_GravitationObjects with mass feel an attractive force that is proportional to their masses and inversely proportional to the square of the distance.
- https://phys.libretexts.org/Courses/Prince_Georges_Community_College/General_Physics_I%3A_Classical_Mechanics/15%3A_Force/15.01%3A_The_Four_Forces_of_NatureWhen you push on something with your hand, for example, you are not really in direct contact with it: the outermost electrons of the atoms at the surface of the object are being electrically repelled ...When you push on something with your hand, for example, you are not really in direct contact with it: the outermost electrons of the atoms at the surface of the object are being electrically repelled by the outermost electrons in the atoms at the surface of your hand.
