Give 3 types of non - contanct forces with 2 egs for each
Answers
The non- contact forces are those which do not require physical contact with the object on which they are acting.
There are three types of non- contact forces:
1. Gravitational force: The force with which objects pull each other is called gravitational force. Gravitational force makes the earth move around the sun and also makes the moon around the earth. In fact, our weight is the gravitational force of the earth acting on us.
2. Electrostatic force: Electrostatic force is the force exerted by a charged body on another charged or uncharged body. Eg: Take a comb and brush it on a hair 3-4 times and then take it near some small bits of paper. This is because the comb is charged because of the rubbing on your hair and it attracts uncharged objects like paper.
3. Magnetic force: Magnetic Force is a force that attracts certain metal objects (like iron and iron filings) towards a magnet. Since magnets attract iron, they are used to separate waste iron objects, or scrap iron from the garbage dumps so that they can be recycled.
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