https://www.khanacademy.org/science/ms-physics/x1baed5db7c1bb50b:non-contact-interactions/x1baed5db7c1bb50b:gravitational-force/v/gravitational-force 2025-06-20T17:00:10.254290374Z Gravitational force Objects with mass exert gravitational forces on each other. Gravitational forces are always attractive. Gravity is a non-contact force that does not require objects be touching in order to act. Instead, the gravitational force can be modeled as acting through a gravitational field. The strength of the gravitational forces two objects exert on each other depends on the masses of both objects, as well as the distance between their centers of mass. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/5c4f03d6-491b-4a7a-8df2-d28fd6b0890b_1280_720_base.png Gravitational force Objects with mass exert gravitational forces on each other. Gravitational forces are always attractive. Gravity is a non-contact force that does not require objects be touching in order to act. Instead, the gravitational force can be modeled as acting through a gravitational field. The strength of the gravitational forces two objects exert on each other depends on the masses of both objects, as well as the distance between their centers of mass. https://cdn.kastatic.org/ka-youtube-converted/R0XFqHBZfHc.mp4/R0XFqHBZfHc.mp4 489 Non Contact Forces https://www.khanacademy.org/science/ms-physics/x1baed5db7c1bb50b:non-contact-interactions/x1baed5db7c1bb50b:gravitational-force/e/understand-gravitational-forces 2025-12-19T15:30:45.999152142Z Understand: gravitational force Check your understanding of gravitational force in this set of free practice questions. Khan Academy exercise https://www.khanacademy.org/science/ms-physics/x1baed5db7c1bb50b:non-contact-interactions/x1baed5db7c1bb50b:electric-and-magnetic-forces/v/electric-force 2025-06-20T17:00:10.254290374Z Electric force Objects with charge exert electric forces on each other. Like charges repel each other, and opposite charges attract each other. The electric force is a non-contact force that does not require objects be touching in order to act. Instead, the electric force acts through an electric field. The strength of the electric forces two objects exert on each other depends on the charges of both objects, as well as the distance between them. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/4010b695-0a3a-45eb-b440-322b134d7693_1280_720_base.png Electric force Objects with charge exert electric forces on each other. Like charges repel each other, and opposite charges attract each other. The electric force is a non-contact force that does not require objects be touching in order to act. Instead, the electric force acts through an electric field. The strength of the electric forces two objects exert on each other depends on the charges of both objects, as well as the distance between them. https://cdn.kastatic.org/ka-youtube-converted/nIGEp5x0Ab4.mp4/nIGEp5x0Ab4.mp4 452 Non Contact Forces https://www.khanacademy.org/science/ms-physics/x1baed5db7c1bb50b:non-contact-interactions/x1baed5db7c1bb50b:electric-and-magnetic-forces/v/magnetic-force 2025-06-20T17:00:10.254290374Z Magnetic force Permanent magnets and electric currents produce magnetic fields. All magnets, no matter how small, have both a north and south pole. Like poles repel each other, and opposite poles attract each other. The magnetic force is a non-contact force that does not require objects be touching in order to act. Instead, the magnetic force acts through a magnetic field. The strength of the magnetic forces two objects exert on each other depends on the strengths of the magnets, their orientations, and the distance between them. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/9972c39c-7a48-4431-ac43-b24cdb1c60e8_1280_720_base.png Magnetic force Permanent magnets and electric currents produce magnetic fields. All magnets, no matter how small, have both a north and south pole. Like poles repel each other, and opposite poles attract each other. The magnetic force is a non-contact force that does not require objects be touching in order to act. Instead, the magnetic force acts through a magnetic field. The strength of the magnetic forces two objects exert on each other depends on the strengths of the magnets, their orientations, and the distance between them. https://cdn.kastatic.org/ka-youtube-converted/u-3cEw0uDC0.mp4/u-3cEw0uDC0.mp4 424 Non Contact Forces https://www.khanacademy.org/science/ms-physics/x1baed5db7c1bb50b:non-contact-interactions/x1baed5db7c1bb50b:electric-and-magnetic-forces/e/understand-magnetic-forces 2026-03-31T02:49:16.891210422Z Understand: electric and magnetic forces Check your understanding of electric and magnetic forces in this set of free practice questions. Khan Academy exercise