how to increase friction
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Frictional force can be increased in the following ways:
- Make surface of the object rough so that it becomes difficult to glide the object against other objects or surfaces.
- Remove lubricants from the object/surface because un-lubricated surfaces generate friction.
- Consider creating sliding friction rather than rolling friction as it increases the surface area of the object in contact with another surface and greater surface area leads to more friction
- Increase air/water resistance by avoiding streamlined shape of objects.
- Use powders to generate friction as done by wrestlers with the intension to strengthen their grip.
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Friction is a force between 2 surfaces that are sliding, or trying to slide across one another, for example when you try to push a toy car along the floor.
Friction always works in the direction opposite from the direction of object is moving, or trying to move.
Methods to increase the friction :
- Increasing the irregularities on the surfaces in contact
- Using high friction material such as rubber
- Increasing the normal reaction between the surface
- Increase the number of moving surface
- By avoiding use of lubricants
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