Give two examples where friction is undesirable

If there is no friction between the contact surfaces, then a body can't be stopped without the application of external force, give two examples where friction is undesirable. 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.

Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engine can cause the parts to wear out. Other examples of friction are illustrated in the two Figures below Friction between the graphite in a pencil and a sheet of paper leaves a mark on the paper. Friction between a bicycle brake pad and the rim of a wheel causes the wheel to stop turning. Did you ever rub your hands together to warm them up, Why does this make your hands warmer? The answer is friction.

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. The force of friction between two objects is the product of the normal force and the coefficient of friction. The normal force is the component of force that is perpendicular to the plane of friction. The coefficient of friction is specific to the two materials, in this example the block of wood and the floor. In addition, there is a static coefficient of friction applicable to a stationary situation and a kinetic coefficient of friction applicable when the object is already moving. Friction plays a vital role in our daily life. Without friction we are handicap. It is becomes difficult to walk on a slippery road due to low friction. When we move on ice, it becomes difficult to walk due to low friction of ice. We can not fix nail in the wood or wall if there is no friction. It is friction which holds the nail.

One example is the friction that helps the girls climb the rock wall in the picture above.

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.

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

Have you ever wondered what is friction and force? How do we relate them to our day-to-day activities? Friction is a natural phenomenon that occurs when there is contact between two objects. Where there is friction, there will be a loss of energy. Friction occurs due to the roughness of the rubbing surface. During friction, the molecules in the surface will interact with each other. The force of friction will depend on the material of the rubbing surface. It also depends on the speed or intensity at which two surfaces come into contact with each other.

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Friction causes mechanical parts to seize and wear out. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers. However, when highly magnified, the surface of metal appears to be very bumpy. You can see what they look like in the Figure below. Classify the following as desirable and undesirable changes. Static friction acts on objects when they are resting on a surface. It helps to stop a moving object like a car. More answers. Fluid Friction Fluid friction is friction that acts on objects that are moving through a fluid. Science 6 q3 Slm3 Science 6 q3 Slm3. Science 12 Science Outside wooden steps may get slippery when they are wet. Q: A situation where friction is undesirable? You've got to add more friction. In addition, there is a static coefficient of friction applicable to a stationary situation and a kinetic coefficient of friction applicable when the object is already moving.

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

Write your answer Still have questions? Give an original example of fluid friction. The wadded piece will fall to the ground immediately. Do you think that resistance to the motion of the book has been reduced? Look at the skydiver in the Figure below. What Is Friction? Fricitional Force Fricitional Force. That's why you can't slide as far across ice with shoes as you can on the thin blades of skates. 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. Science 6 q3 Slm3 Science 6 q3 Slm3. Wad one of the pieces of paper into a ball. Academic Documents.