• • • Have you ever wondered why does a moving object stop? There is a force that restricts the movement of the objects. It is normal to use force to start moving things; however, force can also be used to stop the motion of objects. Friction is a force that resists the motion of two objects. Friction is not a central force like gravity, it is the result of electromagnetic attraction.

Explaining friction in the right way can be tricky if you do not have a visual aid to help your students conceptualize each point. With the Types of Friction PowerPoint Diagram, you will have just that by allowing you to make an informative presentation that will show the students helpful imagery and helping you with the talking points. The Types of Friction PowerPoint Diagram is a fully editable set of three PowerPoint sldes, each one with the images of different kinds of friction. The first type that is labeled is no movement; the second type is sliding motion friction; and the third type is rolling motion friction. Each one comes with its own simple diagram to show what is being discussed. Change the colors as you wish.

### Static Friction

One of the most common types of friction is Static friction. This kind of friction happens when an object is moved along the surface on which it is resting. The surface resists the movement of the object. The extent of static friction is equal to the degree of force applied. The direction of the force is opposite to the motionsâ€™ direction. The degree of the static friction is dependent on the coefficient of static friction (Î¼s) and the net normal reaction of the object (N).

### Fluid Friction

The fluid friction is a force that exists when an object is moving in the air or on the fluid. The fluid includes both liquid and gases, they can take the shape of the container. When you move your hand in the water or in the air, you experience fluid friction. You are able to experience the resistance by water.

Another great example of fluid friction is when a skydiver jumps off an airplane with a parachute, the person descends slowly. This is because of the fluid frictions, it slows down the speed.

### Rolling Friction

Another type of the friction is rolling friction. This force is useful for slowing down the movement of an object that is rolling. It is a blend of different types of frictional forces depending on the ground, contact of the wheel, and surface. For instance, if a soft object is moving on a hard surface, then the distortion slows down the object. On the other hand, in case a hard object is has a motion on the hard surface, a molecular and static friction will oppose its motion.

### Kinetic Friction

One of the most known friction is kinetic friction. This friction is denoted as Î¼k. The kinetic friction is experienced when you move an object along the surface. The extent of the kinetic friction is less than the degree of static friction.

### Sliding Friction

This type of friction takes place when two objects that are solid comes in contact. In this friction, force is applied to an object for sliding it against the other object. The sliding friction opposes the motion. Most of the times, the surface is flats. This kind of friction is weaker than the static friction. This is why it is hassle-free to slide an object once it starts moving.

A great example of sliding friction is that when you use a pencil to write you are using sliding friction. The lead of the pencil can easily slide over the paper. The friction between the paper and pencil is more than enough leave an impression.

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• 3 Fully editable PowerPoint slides