what o you mean by contact and non contact forces? give example of each
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Contact forces are those which gets applied only when the two surfaced are in contact, if there is little bit of space between those surfaces the contact forces won't apply. Examples of contact forces are Normal force, Friction force etc.
Non-contact forces are those which don't need a contact between the surfaces for their implications,these will apply even if two objects are far away. Examples are Gravitational force, Electrostatic force etc.
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