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How friction can be both helpful and unhelpful?
On a car, friction is useful on the tyres and brakes. It is not required for the parts that rotate.
What does friction have to do with pushing or pulling a wagon?
Friction is necessary to cause the wheels to rotate about the axis of the wagon-- without it the wagon would just slide over the surface.
Where does nearly all of the energy in the tides originally come from?
From Earth's rotation. Therefore, if tidal energy is used - or not used, but just wasted in friction - Earth will gradually rotate slower and slower.
What are the 2kinds of friction?
Static Friction and Kinetic Friction. Static Friction is what friction that slows you down. While Kinetic friction is sliding friction.
What do lubricants do to friction by replacing sliding friction with fluid friction?
Lubricants reduce friction by replacing sliding friction with fluid friction.
In what ways can friction be helpful?
Friction is necessary for wheels to rotate and nails to keep in walls.
How friction can be both helpful and unhelpful?
On a car, friction is useful on the tyres and brakes. It is not required for the parts that rotate.
In what ways can be helpful?
Friction is necessary for wheels to rotate and nails to keep in walls.
What does friction have to do with pushing or pulling a wagon?
Friction is necessary to cause the wheels to rotate about the axis of the wagon-- without it the wagon would just slide over the surface.
Why doesn't the ice rings around Saturn melt with the speed they rotate?
space is a vacuum. no air means no friction. without friction the ice doesn't melt
When is friction necessary for some type of movement to occur?
If a ball slides down a frictionless hill there will be no rotation of the ball. But with friction the ball will both translate and rotate down the hill.
How do you use friction daily?
Walking , if there is no friction you wont be able to walk properly . Another important thing is driving . In the absence of friction the car wheels wont be able to rotate probably thus the car will just go in circles.
Is worm and wheel reversible?
yes you can reverse worm and gear. A worm gear can rotate the worm, its based on the lead angle, pressure angle and co.efficient of friction between the pairs.
When does fricdtion occur in a car that runs on propeller?
If you mean like an airplane without wings, there's air resistance, friction between the wheels and the ground, and the axle on which the wheels rotate.
Where does nearly all of the energy in the tides originally come from?
From Earth's rotation. Therefore, if tidal energy is used - or not used, but just wasted in friction - Earth will gradually rotate slower and slower.
Why do piston rings rotate?
Just from normal friction and vibration. This may be more pronounced in worn cylinders or worn piston ring grooves. If the cylinder compression is ok, then it shouldn't be a problem.
Why the pressure of the air inside a car tire increases when the car is driven at high speed?
When you drive the the tires create friction with the road when they rotate. Friction creates heat. The air molecules in the tire heat up and expand. Since the tire is rubber and sealed the tire expands with the pressure of the hot air.
