Suggest two ways of reducing friction and two ways of increasing friction.
Answers
Answer:
Explanation:
the tyres of vehicles have treads (these are the ‘designs’ that you can see on the tyre surface), which increase the friction between the tyre and the road. Similarly, the soles of shoes have grooves, in order to increase friction. Gymnasts often apply a coarse material on their hands to get a better grip by increasing friction.
the tyres of vehicles have treads (these are the ‘designs’ that you can see on the tyre surface), which increase the friction between the tyre and the road. Similarly, the soles of shoes have grooves, in order to increase friction. Gymnasts often apply a coarse material on their hands to get a better grip by increasing friction.
reducing--
By polishing the surface, as polishing makes the surface smooth and friction can be reduced. Using lubricants such as oil or grease can reduce the friction between the surfaces. When objects are rolled over the surface, the friction between the rolled object and surface can be reduced by using ball bearings.
increasing--
There are two methods of increasing friction: one is by making the surfaces rough and the other by increasing the mass of the object that is moving. For example, the tyres of vehicles have treads (these are the 'designs' that you can see on the tyre surface), which increase the friction between the tyre and the road.