The number one example would be increased lubrication, like oil in your car's engine. The number two answer would be decreased pressure, like having the parts fit together less tightly.
This looks like an attempt to have someone else do your homework, by the way!
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A skater skating on ice.
A rotating oiled bearing
A rotational land slip
A person slipping on a muddy step
Surfaces that are smooth and lubricated will typically produce the least amount of friction. Examples include ice, polished metal, and Teflon-coated surfaces. Friction can also be reduced by decreasing the weight pressing the surfaces together.
Examples of equipment that can help decrease friction include lubricants like oil or grease, wheels or ball bearings in machinery, and using low-friction materials like Teflon or nylon. Additionally, polishing surfaces can also help reduce friction by creating a smoother surface.
Using lubricants such as oil or grease to reduce friction between surfaces. Using ball bearings or roller bearings to minimize friction in rotating components. Polishing or smoothing the surfaces in contact to reduce roughness and friction. Maintaining proper alignment and spacing between moving parts to decrease friction. Applying a low-friction coating, such as Teflon, to surfaces to reduce friction.
Decreasing the block in contact with the table reduces the normal force acting on the block, which in turn decreases the frictional force. This results in a lower kinetic friction force between the block and the table.
Activities that require increasing friction can include using sandpaper to roughen a surface or tightening the grip of shoes with a shoelace. Activities that involve decreasing friction can include applying lubricant to machine parts or gliding on ice skates with a thin layer of water on the ice.
Surfaces that are smooth and lubricated will typically produce the least amount of friction. Examples include ice, polished metal, and Teflon-coated surfaces. Friction can also be reduced by decreasing the weight pressing the surfaces together.
Examples of equipment that can help decrease friction include lubricants like oil or grease, wheels or ball bearings in machinery, and using low-friction materials like Teflon or nylon. Additionally, polishing surfaces can also help reduce friction by creating a smoother surface.
friction
Using lubricants such as oil or grease to reduce friction between surfaces. Using ball bearings or roller bearings to minimize friction in rotating components. Polishing or smoothing the surfaces in contact to reduce roughness and friction. Maintaining proper alignment and spacing between moving parts to decrease friction. Applying a low-friction coating, such as Teflon, to surfaces to reduce friction.
Important factors in decreasing Kinetic Energy are Gravity and 'drag' from Friction.
applying a brake
Decreasing the block in contact with the table reduces the normal force acting on the block, which in turn decreases the frictional force. This results in a lower kinetic friction force between the block and the table.
Examples of SLIDING FRICTION is pushing a heavy rock in your path, or moving a box on the floor.
smooth surfaces rollerblades cooking spray in pans
Activities that require increasing friction can include using sandpaper to roughen a surface or tightening the grip of shoes with a shoelace. Activities that involve decreasing friction can include applying lubricant to machine parts or gliding on ice skates with a thin layer of water on the ice.
The fact that you can walk without sliding is an example of friction.
Some examples of relatively high friction surfaces are: sand paper, grass, and asphalt. In general, the rougher the surface, the more friction it has.