What is an example when friction is not wanted?

What is an example when friction is not wanted?

Friction is sometimes unhelpful. For example, if you don’t lubricate your bike regularly with oil, the friction in the chain and axles increases. Your bike will be noisy and difficult to pedal. When there is a lot of friction between moving parts, energy is lost to the surroundings as heat.

Where is friction not needed?

1.) When you fall down and slide along a downward sloping asphalt road, face down, friction is harmful. 2.) Writing with your Parker fountain pen on a poorly finished wall.

When would you need less friction?

Sometimes we want to reduce friction. For example, we use oil to reduce the friction between the moving parts inside a car engine. The oil holds the surfaces apart and can flow between them. The reduced friction means there is less wear on the car’s moving parts and less heat produced.

What would happen if there was no friction?

Explanation: Friction stops things from sliding apart. If there was no friction everything would slide to the lowest point. With no friction the only possible movement would be falling to a lower point under gravity.

What are the main disadvantages of friction?

Disadvantages of friction:

• Friction produces a lot of heat in various parts of the machinery and this leads to wastage of energy as heat.
• Opposes motion, hence more energy is needed to overcome friction.
• Noise production in machines is irritating as well as leads to energy loss.

Which is an example of friction being unwanted?

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. Frictional forces oppose moving objects.

When is friction not desirable in moving parts?

Friction is not desirable in moving parts of engines of vehicles. Even with radiator full of cold water the engine can overheat and slow down its travel. The driver is forced to stop and rest the vehicle. It is also not desirable when sliding heavy objects up the inclined plane. More force is needed to raise the load to a desired height..

Why does friction slow down a moving object?

Friction produces unnecessary heat leading to the wastage of energy. The force of friction acts in the opposite direction of motion, so friction slows down the motion of moving objects.

What happens when friction is applied to an engine?

When friction opposes the moving parts of an engine, the engine is forced to expend more energy to overcome the frictional force. Friction also transfers existing energy into heat. This heat can damage working machinery and cause damage.