Here are some examples of static friction : 1. A box of much weight against the ground, difficult to lift and move. 2. A table lamp resting on a light table. 3. A dry plastic and a wet plastic, where the second has less friction than the first. 4. Frictional toys that mimic the behaviour of force in the case of vehicles, but in a static way. 5. The rest of the body when a person leans against the wall.

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Static friction is when an object is held stationary against another and neither moves with respect to each other. A certain minimum tangential (lateral) force is required to budge them, and then they start moving in relation to one another. A car parked on a hill. The brakes apply static friction to the wheel hubs, and the wheels hold fast to the ground because of static friction. A tightened bolt. If too loose, it may shake loose and fall out. But if properly tightened, there is strong static friction between the threads of the bolt and the nut, and it won’t come loose. Papers on a tabletop. We count on them not falling off. However, sufficient wind force or earthquake vibrations can dislodge the papers and other objects, overcoming the static friction force. A towel hanging on a rack. We expect it to stay put. However, if one end is too long, we may come back to find the towel on the floor, because the weight difference overcame the static friction between the towel and the rod. A bookmark in a book. It is supposed to stay in place. But if the bookmark is slick plastic, it may not have enough static friction to hold its place and may fall out of the book Everywhere around us at all times are numerous examples of static friction keeping things in place where we expect them to stay.

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