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| Friction also can makes heat |
Frictional force is a force that opposes motions. It is produce when there is two surfaces are rub against each other. Frictional force’s direction is the opposite of the object’s direction. Friction also can makes heat.
The Effects of Frictional Forces
- Slows down or stops a moving objects
- Prevent an object from starting to moves
- Affects the movement of objects on different surfaces
Frictional Forces Slows Down or Stops Moving Object
- Friction can slows down a moving objects or maybe stops it
- If there is no friction, a moving object will cannot slows down and stop
- Friction can prevent an object to move
- If we want to move the objects, we must overcome it’s friction first
- The way to overcome friction is giving more force
Frictional Force Affects the Movement of Objects on Different
Surfaces
- Friction can affects the movement of an objects on different surfaces
- Usually the rougher the surface, the bigger frictional force are there
- And the smoother the surface, the smaller the frictional force are there
Resistances
- Air Resistance
- Water Resistance
What is Air Resistance?
The frictional force that acts on object trough air is called air resistance. Air resistance pushes against a moving objects and slows it down.
Frictional Forces in Everyday life
- Frictional force can be useful
- Frictional force can cause problems
Frictional Force that is Useful
- Friction are useful for our daily live
- If there is no grip, we will slip and slide away
- If there is no friction, we will may not able to stop moving objects
Frictional Force that Makes Problems
- Frictional force also can make problems such as :
- Slows a moving object down
- Causes engines to overheat
- Tyres wear out
Ways to Reduce Friction
D e m o :
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