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2015-10-06T20:55:23+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Gravitation forces,electric forces,magnetic forces
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2015-10-06T22:38:27+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Contact forces are  friction, normal force, spring force, buoyancy force, drag force.

Then most of the other forces are non-contact forces....Electrostatic coulomb force, magnetic force,  electromagnetic force, Newton's gravitational force, nuclear forces.   In these cases there is no contact physically between the influenced object and the exerting/influencing object.
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