In which situations or places would you want to reduce the force of friction?

Answer 1

Moving mechanical parts usually need some degree of lubrication so that they do not waste energy in overcoming friction. A very simple case of this would be a door hinge. If the door hinge has too much friction, the door squeaks when you open or close it. It moves smoothly and quietly if it is lubricated. With something like the motor of a car or an airplane, friction would present much more serious problems than the squeak of a door hinge. You would get terrible overheating and eventually an explosion, in an unlubricated motor.

Answer 2

Lots of situations. Basically when you want anything to travel at a faster speed. Examples of reducing friction could be waxing snowboards, skis and surfboards. Lubricating a bicycle chain, sharpening ice skates etc.

Answer 3

When you are sliding something across a rough surface, such as a block on a table to a car driving on a road.the rough edges can be able to stop the object from moving and that we dont want! that is why you should lubricate a car so that the engine runs without running into rough surfaces and messing the whole car up!

Answer 4

NO!

• You very much need to increase friction between car tires and the road surface in winter. Accumulated snow and ice can already reduce friction there to the point that stopping and steering the car becomes impossible leading to many severe and occasionally fatal accidents.
• Vehicle brakes also need as much friction as possible to efficiently stop the vehicle when needed.
• Sandpaper and other abrasives depend on friction to smooth and clean surfaces.
• etc.

Answer 5

Friction is very important. However, in some situations it needs to be minimized as much as possible, such as between movable parts of a system.

Answer 6

Anything to do with racing: car racing, ski racing, especially bike racing.

Answer 7

Inside internal combustion engines- that's why we use oil. OR on anything w/ moving parts, at the fulcrums of design.