sand applied to a slick sidewalk
Friction can be reduced by using lubricants like oil or grease on surfaces. To increase friction, surfaces can be roughened or materials with higher coefficients of friction can be used. Adjusting the weight or pressure between the surfaces can also increase friction.
sandpaper used to smooth wood
There are different ways through which helpful friction be increased. The easiest way is using coarser or rougher surface to increase resistance.
Friction can be helpful and not helpful it is not helpful when you are running because it slows you down hope that'll help!!!! ;)
Decreased friction is very helpful in working machinery, because friction causes wear and tear.Mainly its very helpful in moving parts. Decreased friction is also helpful in electric cables and wires, as reduced friction reduces energy loss via heat.
Friction is helpful between car tyres and roads for grip. It is also sometimes used for heating as friction generates heat.
When work is done on a sliding block with friction, it can either increase or decrease the block's potential energy, depending on the direction of the force applied. If the work is done against the force of friction, the potential energy of the block increases. Conversely, if the work is done in the direction of the force of friction, the potential energy of the block decreases.
Friction can be unhelpful in situations where you want to minimize energy loss, such as in machinery where friction causes wear and tear on moving parts, reducing efficiency. Additionally, in sports like speed skating or car racing, reducing friction can help increase speed and performance.
You can increase the force of friction by increasing the normal force acting on the object. This can be done by adding weight to the object or increasing the angle at which the object is inclined. Additionally, you can roughen the surface of the object or the surface it is sliding on to increase friction.
By using kinetic friction
Helpful Friction.
Friction is necessary for wheels to rotate and nails to keep in walls.