how is that happens or dond.please clarify with physical meaning? In the absence of friction body will start slipping against each other? Then how to find the direction of friction give examples to illustrate it? Is the direction of friction is opposite to the velocity w.r.t the body applying friction.please clarify whether i m right? If yes prove me by giving examples please clear my doubts

Dear Krish,

Friction is actually a force that appears whenever two things rub against each other. Although two objects might look smooth, microscopically, they're very rough and jagged

As they slide against each other, their contact is anything BUT smooth. They both kind of grind and drag against each other. This is where friction comes from.

But friction is not all bad. In fact, it has a lot to do with life as we know it here on Earth. Without it, we wouldn't be able to walk, sit in a chair, climb stairs, or use a mouse to surf the web. Everything would just keep slipping and falling all over the place

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