distinguished between satitc friction and sliding friction
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Explanation:
Sliding friction is the friction which comes into play when the surface of one object moves relative to the surface of another object. ... Static friction arise when you push the the bag on the flat surface. Sliding friction arises when you push the same bag over an inclined surface
If you try to slide two objects past each other, a small amount of force will result in no motion. The force of friction is greater than the applied force. This is static friction. If you apply a little more force, the object "breaks free" and slides, although you still need to apply force to keep the object sliding
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Explanation:
Static firiction
- Static friction is a force that keeps an object at rest. Static friction definition can be written as:
- The friction experienced when individuals try to move a stationary object on a surface,
- without actually triggering any relative motion between the body and the surface which it is on.
- It can be explained as the force of friction which precisely balances the applied force for the duration of the stationary state of the body.
- The static frictional force is a self-regulating force, i.e. static friction will at all times be equivalent and opposite to the force applied.Static FrictionR is the reaction force because of the weight W. the external force is F and fr is the friction. F = -fr when no motion takes place.
- Static Friction Examples
- Some real-life examples of static friction are given in the points below.
- Papers on a tabletop
- A towel hanging on a rack
- A bookmark in a book
- A car parked on a hill
Sliding Friction
- The amount of sliding friction created by objects is expressed as a coefficient which takes into consideration the various factors that can affect the level of friction. These various factors that can impact sliding friction include the following:
- The surface deformation of objects
- The roughness/smoothness of the surface of the objeects
The original speed of either object
- The size of object
- The amount of pressure on either object
- The adhesion of the surface
- Everyday Examples of Sliding Friction
- Specific examples of sliding friction include:
- Rubbing both hands together to create heat
- A sled sliding across snow or ice
- Skis sliding against snow
- A person sliding down a slide is an example of sliding friction
- A coaster sliding against a table
- A washing machine pushed along a floor
- An iron being pushed across material
- The frame and the edge of door sliding against one another
- The bottom of a trashcan sliding against the concrete
- A block being slid across the floor
- Two cement blocks being slid into place next to each other
- Two cards in a deck sliding against each other
- The bottom of a glass being pushed across a table
- A couch sliding against the steps when being moved
- A dresser's legs on the carpet when being slid to another part of the room
- The rope and the pulley on a set of blinds or curtains
- The friction between two books when sliding one into place on a bookshelf
- The friction between the bottom of a book and the shelf when being slid into place
- A vegetable drawer sliding against the holder in the fridge
- A check being slid across the counter at the bank
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