rub against each other
makes heat
When you rub two things together, the friction between the two things will produce heat.
Friction does not move things. Friction is the force that opposes motion between two objects that are touching. Not enough friction allows for things to move, depending on what kind of friction; the less force it has.
Heat.
Friction. If its done right with the right kinds of woods and preparation, you can make a fire with them by rubbing them in a special way.
The coefficiant of friction between the two surfaces and the normal reaction force of the object lying on the surface
When you rub two things together, the friction between the two things will produce heat.
Friction does not move things. Friction is the force that opposes motion between two objects that are touching. Not enough friction allows for things to move, depending on what kind of friction; the less force it has.
When you rub two things together, it causes friction.
Friction is important because without friction we would be sliding and slipping everywhere as friction slows down and stops things. Friction occurs when two things touch or make contact.
friction
Heat.
Friction makes things (like soles) rub away
Friction is a force that acts to stop the movement of two touching things. The energy lost to friction is turned into sound and heat.
Friction. If its done right with the right kinds of woods and preparation, you can make a fire with them by rubbing them in a special way.
The coefficiant of friction between the two surfaces and the normal reaction force of the object lying on the surface
Friction
To perform friction, simply take two rough things and slide them along each other. The volume of the noise is proportional to the value of the friction.