Without friction, the best way to move would be with rocket propulsion. If there are solid objects on this frictionless surface, it would also be possible to move by pushing off of them.Know More
Rocket propulsion and pushing off of objects are both possible because of the physical principles described by Newton's Third Law of Motion: Every action has an equal and opposite reaction. For example, using a fire extinguisher for rocket propulsion would send the foam from the extinguisher flying in one direction and the user would be pushed in the opposite direction. On a completely frictionless surface, something as simple as a person blowing air from his mouth would allow for movement. By pushing the air one way, a person or an object is sent in the opposite direction.
The same sort of thing would happen when pushing against an object in the environment. An example of this can be seen in the real world; ice is a very low-friction surface, so if a stationary ice skater pushes another stationary ice skater, they both move in opposite directions.
Walking does not work on a frictionless surface because taking a step requires gripping the ground through friction. The foot usually stays in place while the rest of the body moves forward. On a frictionless surface, a person trying to walk would essentially be doing the moonwalk in place.Learn more about Motion & Mechanics
Water moves through Earth's surface and atmosphere through the hydrologic cycle and changes through three distinct forms, which are as a solid, liquid and gas. This cycle allows water to move through the atmosphere by becoming a gas before being redistributed through precipitation.Full Answer >
To create a science fair project about wheels reducing friction, the exhibitioner could give live demonstrations of how difficult it is to push identical objects across a surface with and without wheels. Friction is the resistance of a body to motion in contact with another body and is directly proportional to the contact area between two surfaces; wheeled bodies move more smoothly over surfaces because their contact areas are reduced.Full Answer >
Friction is a force that opposes motion, so it is unhelpful in all situations where the motion of an object is desired. A by-product of friction is that energy is wasted in the form of heat, which can cause problems in temperature-sensitive environments.Full Answer >
Friction is unwanted in any situation in which free and continuous motion of mechanical parts is necessary. Some examples include the moving parts inside of an engine, door hinges and water slides.Full Answer >