What is Friction, Atmospheric pressure, Sliding friction and rolling friction.
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Answer:
The tendency of ground to resist motion is called friction.
Preassure exerted by atmosphere on objects is called Atmospheric preasure.
Friction occur when an object slides is called sliding friction.
Friction that occur when an object rolls is called rolling friction.
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Answer:
Friction-Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.
Atmospheric pressure-Atmospheric pressure is a force in an area pushed against a surface by the weight of the atmosphere of Earth, a layer of air. ... This is because high places do not have as much air above them, pushing down. Barometers can be used to measure atmospheric pressure. There is the same atmospheric pressure from all directions.
Sliding friction-A coaster sliding against a table. A washing machine pushed along with the floor. The frame and the edge of the door sliding against one another. A block being slid across the floor. Two cards in a deck sliding against each other.
Rolling friction-Rolling friction occurs when a wheel, ball, or cylinder rolls freely over a surface, as in ball and roller bearings. The main source of friction in rolling appears to be dissipation of energy involved in deformation of the objects.
Explanation:
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