Give 5 examples of unwanted friction?

Answer 1

Friction is force resisting relative motion of solid surfaced, fluid layers and material elements sliding against each other. Examples of friction are rubbing your hands together, rubbing two pieces of wood together, automobile brakes, rain adhesion, road slipperiness, split friction, road texture, lighting matchsticks and rolling a coin.

Answer 2

Writing

Writing with a pencil requires friction. You could not hold a pencil in your hand without friction. It would slip out when you tried to hold it to write. The graphite pencil led would not make a mark on the paper without friction.

A pencil eraser uses friction to rub off mistakes written in pencil lead. Rubbing the eraser on the lead wears out the eraser due to friction, while the particles worn off gather up the pencil lead from the paper.

Driving car

Your car would not start moving if it wasn't for the friction of the tires against the street. With no friction, the tires would just spin. Likewise, you could not stop without the friction of the brakes and the tires

Answer 3

• In machinery; it is the cause for the wear and tear of the machinery. This reduces efficiency and reduces the life of the machinery.
• Friction makes it hard to move heavy furniture

I honestly only know 2... Figure it out on your own b!tches ;)

Answer 4

1. A squeaky door hinge causing noise.
2. Drag on a bicycle wheel, slowing down movement.
3. Blister caused by shoes rubbing against skin.
4. Static cling in clothes causing them to stick together.
5. Sticky drawer making it difficult to open and close smoothly.

Answer 5

My hand as it slaps and rubs across your face.

Answer 6

Scrubbing

Writing

Rubbing

using matches

hoovering

Answer 7

heat

slowing things down