Give two examples where friction is undesirable

Wiki User. An example of undesirable friction is when a cyclists falls and his face against pavement that skin on the road. Undesirable friction is something that is not controllable.

Can the same change be desirable at one time and undesirable at another? Explain with as an example. The eddy current have both desirable and undesirable effects. A desirable change is always associated with an undesirable change. Give as example.

Give two examples where friction is undesirable

Friction reduces the smoothness of a surface. For example, moving parts of a machine, shoes that we wear. Hence, lubrication is required for such materials to reduce the friction. Thus, cost of maintenance increases. The jar of a mixer becomes hot due to friction arising between the moving machine parts. Friction causes wear and tear of machine parts that rub against each other continuously, leading to costly maintenance. Additional energy is consumed to overcome friction, in addition to the physical work required for actual work. Tyres of cars and trucks are treaded to prevent the loss of traction due to the buildup of a layer of water between the road and the tyre in wet conditions. The grooves in tyres allow water to be expelled from beneath the tyre. Treading maintains friction between the road and the tyre for proper control of the vehicle. Kabaddi players rub their hands with soil so that they get a better grip on their opponents. The game involves grabbing the players of the opponent team. The sweat on the bodies do not let the players to get a proper grip on on the opponents. Chapter Chosen Friction.

A substance that is introduced between two surfaces in contact, to reduce friction, is called a lubricant. We can not fix nail in the wood or wall if there is no friction.

If there is no friction between the contact surfaces, then a body can't be stopped without the application of external force. In the same time a person can't walk on the ground if there is no friction between the ground and our legs also no vehicle can run on the ground without the help of friction. Desirable effects of friction are: 1. It helps us in movement. It helps to stop a moving object like a car. Friction is Undesirable: A friction is undesirable during ice skating or when a block is lifted or put down on the truck with the help of some inclined plane.

Friction is a force that is around us all the time that opposes relative motion between surfaces in contact but also allows us to move which you have discovered if you have ever tried to walk on ice. While a common force, the behavior of friction is actually very complicated and is still not completely understood. We have to rely heavily on observations for whatever understandings we can gain. However, we can still deal with its more elementary general characteristics and understand the circumstances in which it behaves. Friction is a force that opposes relative motion between surfaces in contact. One of the simpler characteristics of friction is that it is parallel to the contact surface between surfaces and always in a direction that opposes motion or attempted motion of the systems relative to each other. If two surfaces are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, friction slows a hockey puck sliding on ice. But when objects are stationary, static friction can act between them; the static friction is usually greater than the kinetic friction between the surfaces.

Give two examples where friction is undesirable

When a body is in motion, it has resistance because the body interacts with its surroundings. This resistance is a force of friction. Friction opposes relative motion between systems in contact but also allows us to move, a concept that becomes obvious if you try to walk on ice. Friction is a common yet complex force, and its behavior still not completely understood. Still, it is possible to understand the circumstances in which it behaves. Friction is a force that opposes relative motion between systems in contact. There are several forms of friction. One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems and is always in a direction that opposes motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction.

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Rolling Friction Rolling friction is friction that acts on objects when they are rolling over a surface. Science 6 q3 Slm3 Science 6 q3 Slm3. Give examples to show that friction is both a friend and a foe. Notes for Friction. Jump to Page. A desirable change is always associated with an undesirable change. If there is no friction between the contact surfaces, then a body can't be stopped without the application of external force. Copy Link. To begin, fill the bottle with rice. The coefficient of friction is specific to the two materials, in this example the block of wood and the floor. A fluid is a substance that can flow and take the shape of its container. Concept : Rolling friction Quiz Time 1.

Friction is a force that resists movement between surfaces in contact. It is caused by the interactions between the molecules that make up objects.

Uploaded by jellyB Rafael. Chapter: Friction: cls8 Chapter: Friction: cls8. In the same time a person can't walk on the ground if there is no friction between the ground and our legs also no vehicle can run on the ground without the help of friction. Try sticking the chopstick down into the bottle. Friction is the force that opposes motion between any surfaces that are in contact. It can cause the car to overheat. Friction produces a lot of heat. Related Solutions Can the same change be desirable at one time and undesirable at another? Give examples to show that friction is both a friend and a foe. Identify three factors that affect friction. When a car is travelling with brake pads rubbing although supposed to be free. Describe a situation in which static friction is useful? Save Save Friction-desirable-undesirable For Later. Friction Basic Friction Basic.