Essay On Friction

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Friction
Friction- types of and their effects on forces
Definition: Friction- “the resistance that one surface or object encounters when moving over another”
There are four different types of friction these are: static, sliding, rolling and fluid friction. The types of friction that occurs between solid surfaces is are static, rolling and sliding. Fluid friction on the other hand only occurs in liquids and gases
Static friction:
When moving an object resting on a surface it requires more force to move then to keep it moving the reason for this is static friction. Static friction is the that exist between objects resting on a surface. Objects grip surfaces due to imperfections on them. For example, if you had a microscope and zoomed in on an
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Sliding friction can be related to static friction. For example if you were trying to move a piece of furniture around on carpet, at rest static friction is acting upon the furniture but after you push the furniture it starts to slide around on the carpet, this is called sliding friction.
Fluid friction:
Fluid friction is the friction that exists when an object moves through a fluid. Fluid friction occurs when two fluid layers move relative to each other. The internal resistance to this flow is called visocity. ”Viscosity is the measure of a fluid's resistance to flow because of its internal friction”

Mechanical forces
5 different types of mechanical forces
The five types of mechanical forces are: Compression, tension, bending, shear and torsion.
Compression force:
Compression force is the act of power, exertion or pressure against that causes the object to be squeezed, squashed or compacted.
Tension force:
Tension force is the force on an object such as rope string cable etc when it is pulled tightly by forces acting on both ends.
Bending force:
Bending force occurs when an object undergoes a heavy load causing the object to bend under the stress .
Shear force:
Shear force occurs when a force pushes on part of a body one way and the other part of the body in the opposite direction.
Torsion
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