https://www.khanacademy.org/science/grade-7-science-snc-aligned/x64f379bc07a3640a:force-and-motion/x64f379bc07a3640a:contact-and-non-contact-forces/v/types-of-forces-ur 2025-08-08T00:24:37.843818748Z Types of forces Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Types of forces Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/vLyu4hSgs0E.mp4/vLyu4hSgs0E.mp4 543 Contact and non-contact forces https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:forces-and-machine/x0c8b40bd4b242f0b:forces-its-effects-and-types/e/force-its-effects-and-types 2026-04-06T02:41:58.374508961Z Force, its effects and types Let's solve some questions on force, its effects and types Vibhor Pandey exercise https://www.khanacademy.org/science/grade-7-science-snc-aligned/x64f379bc07a3640a:force-and-motion/x64f379bc07a3640a:contact-and-non-contact-forces/v/contact-forces-dynamics-ap-physics-1-khan-academy 2022-10-05T03:05:09.337066799Z Contact Forces In order for objects to exert a contact force, the objects must be touching. Common examples of contact forces include tension, the normal force, and friction. Contact forces arise due to a large number of long-range forces acting over very small scales. David SantoPietro video https://cdn.kastatic.org/ka_thumbnails_cache/2cb62389-22ea-459b-9181-495f81e4389b_1280_720_base.png Contact Forces In order for objects to exert a contact force, the objects must be touching. Common examples of contact forces include tension, the normal force, and friction. Contact forces arise due to a large number of long-range forces acting over very small scales. https://cdn.kastatic.org/ka-youtube-converted/BtQnTyGq4sI.mp4/BtQnTyGq4sI.mp4 510 Contact and non-contact forces https://www.khanacademy.org/science/up-sw-class-9-science-bridge-course/x2164f6ec11d6a504:week-4/x2164f6ec11d6a504:untitled-130/v/gravitational-forces-ms 2024-01-04T21:41:56.674101033Z Gravitational forces Gravity is more than just things falling down. It's an attractive force that exists between any two objects with mass. Every object with mass, like Earth or a lamp, has a gravitational pull. The strength of this pull depends on the mass of the objects and the distance between them. Even the moon feels Earth's gravity, which is why it orbits us. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/ea4aa5db-9a82-421a-be91-0776a2a66cc3_1280_720_base.png Gravitational forces Gravity is more than just things falling down. It's an attractive force that exists between any two objects with mass. Every object with mass, like Earth or a lamp, has a gravitational pull. The strength of this pull depends on the mass of the objects and the distance between them. Even the moon feels Earth's gravity, which is why it orbits us. https://cdn.kastatic.org/ka-youtube-converted/atogJ2qw9Ko.mp4/atogJ2qw9Ko.mp4 220 Contact and non-contact forces https://www.khanacademy.org/science/ms-physics/x1baed5db7c1bb50b:non-contact-interactions/x1baed5db7c1bb50b:gravitational-force/a/gravitational-forces 2026-04-26T16:30:39.382257956Z Learn and try: Gravitational force Use a PhET simulation to investigate the gravitational forces two masses exert on each other. Explore how mass and distance affect the strengths of gravitational forces. article https://www.khanacademy.org/science/ms-physics/x1baed5db7c1bb50b:non-contact-interactions/x1baed5db7c1bb50b:gravitational-force/e/understand-gravitational-forces 2026-04-26T16:30:39.382257956Z Understand: Gravitational force Check your understanding of gravitational force in this set of free practice questions. Khan Academy exercise https://www.khanacademy.org/science/grade-6-science-snc-aligned/x19bc096754f0b9af:magnetism/x19bc096754f0b9af:magnetic-force-and-magnetic-field/v/magnetic-forces-ms 2024-01-04T21:41:56.674101033Z Magnetic forces Magnets attract or repel each other through magnetic forces. These forces depend on the orientation of the magnets and their distance from each other. The strength of a magnetic force depends on the strength of the magnets and the distance between them. Stronger magnets can even levitate trains! Understanding these forces helps us use magnets in everyday life. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/0148715b-7b1d-4f88-b276-dab8cab76b8f_1280_720_base.png Magnetic forces Magnets attract or repel each other through magnetic forces. These forces depend on the orientation of the magnets and their distance from each other. The strength of a magnetic force depends on the strength of the magnets and the distance between them. Stronger magnets can even levitate trains! Understanding these forces helps us use magnets in everyday life. https://cdn.kastatic.org/ka-youtube-converted/Ikto_172Vak.mp4/Ikto_172Vak.mp4 201 Contact and non-contact forces https://www.khanacademy.org/science/grade-6-science-snc-aligned/x19bc096754f0b9af:electricity/x19bc096754f0b9af:static-electricity/v/electric-forces-ms 2024-01-04T21:41:56.674101033Z Electric forces Electric forces, a type of non-contact force, can act on objects without touching. These forces are caused by electric charges in matter. Objects can have positive, negative, or neutral charges. Electric forces can attract or repel, depending on the charges involved. The strength of the force depends on the charge and distance between objects. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/718a33f1-5dce-442c-be8f-53d18ff0ad04_1280_720_base.png Electric forces Electric forces, a type of non-contact force, can act on objects without touching. These forces are caused by electric charges in matter. Objects can have positive, negative, or neutral charges. Electric forces can attract or repel, depending on the charges involved. The strength of the force depends on the charge and distance between objects. https://cdn.kastatic.org/ka-youtube-converted/OQG83UvXn3w.mp4/OQG83UvXn3w.mp4 187 Contact and non-contact forces https://www.khanacademy.org/science/ms-physics/x1baed5db7c1bb50b:non-contact-interactions/x1baed5db7c1bb50b:electric-and-magnetic-forces/e/understand-magnetic-forces 2026-04-26T16:30:39.382257956Z Understand: Electric and magnetic forces Check your understanding of electric and magnetic forces in this set of free practice questions. Khan Academy exercise https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:forces-and-machine/x0c8b40bd4b242f0b:forces-its-effects-and-types/e/understand-electric-forces 2025-04-16T07:48:17.898801572Z Understand: electric forces Check your understanding of electric forces in this set of free practice questions aligned to NGSS standards. Khan Academy exercise