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In order to move an object at rest you must make sure the forces acting on that object are what?
To move an object at rest, you must apply a force to overcome the force of static friction that is keeping the object stationary. Ensuring that the applied force is greater than the force of static friction will allow the object to start moving.
How is motion affected by friction and how does the law of conservation apply to this?
Friction is a general term applied to the force on something that is applied to it by something that it is moving on or through. If a car is moving along the highway, there is friction between the road and the tires. There is also friction in the wheel bearings. (Lubrication helps limit this.) The friction, the forces between the two things that are moving, appears as heat energy. And by the law of conservation of energy, if something is moving across something else, there will be a bit of energy lost due to friction, but it will have to be conserved - it will have to appear somewhere else because it can't just "disappear" without being accounted for. Friction energy is conserved (law of conservation of energy) and heat results. If someone is doing a project that involves using an abrasive on a material, someone might be sanding wood or metal (or another material). The sandpaper and the material being sanded will get warm as sanding continues. The friction created between the abrasive and the material appears as heat. The energy is conserved; it cannot be lost nor can it simply disappear. Links follow.
If your pulling 30 lb tire on a lawn what is the estimated weight youre actually pulling because of friction?
the equation for static friction coefficient is:static friction coefficient = force required to break bond / weight of object (tire)you need the friction coefficient between rubber and grass, say its 0.5, this means the force you have to apply to equal the friction force is:0.5 = x / 30x = 0.5 * 30x = 15 lbs fanything greater than 15 lbs f will break the bond and accelerate the tire.notes :1 / moving friction coefficient is usually less than static friction coefficient, so youve less drag once its moving.2 / friction coefficients are never greater than 1.0actually , some friction coefficients do exceed 1.0 , see google / friction coefficients table
A block accelerates at 3.2 down a plane inclined at an angle 30 degrees. Acceleration of gravity is 9.8. Whats the coefficient of static friction between the block and the inclined plane?
Static friction does not apply when the block is already moving. Without friction, the force on the block parallel to the surface of the incline is Fg*sin(angle), so the acceleration without friction is 9.8* sin(30) = 9.8 * (1/2) = 4.9 Since it is accelerating at 3.2, friction is slowing down the block by (4.9-3.2 = 1.7). The coefficient of kinetic friction is (1.7/4.9) = 0.346939
Do you have to overcome rolling friction when you slide a bag of groceries across the countertop?
If the bag is sliding across the countertop (i.e., the same surface of the bag is always in contact with the counter), then no. Rolling friction is only relevant when the surface of an object in contact with the surface it moves across always changes.
When you apply the brakes what kind of friction is that?
When you apply the brakes, you are experiencing kinetic friction between the brake pads and the brake rotors. This friction converts the kinetic energy of the moving vehicle into thermal energy, which helps slow down the vehicle.
How do you apply friction?
Friction acts in the opposite direction that the object is moving or trying to move. The force of friction is calculated by multiplying the normal force of the object, usually mass times gravity, by the coefficient of friction.
What is an example of being opposed by static friction?
When you move a heavy object, you must apply a lot of force before the heavy object begins to move. This resistance you feel while the box is NOT moving is static friction. Static friction opposes movement in an initially non-moving object.
If we apply oil on door hinges the friction will?
If we apply oil on door hinges, the friction will decrease because the oil acts as a lubricant, reducing resistance between the moving parts. This will make it easier to open and close the door smoothly.
What kind of friction opposes your push when you are unable to move a heavy piece of furniture across the floor?
The friction that opposes your push is static friction. This type of friction occurs when two objects are in contact but not moving relative to each other. As you apply force to try to move the furniture, the static friction force prevents the furniture from sliding.
What is required to get a stationary object moving?
An outside force is needed. If friction comes into play (which it likely will), the magnitude of the applied force must be greater than the force of friction acting upon the object in order for the object to move. FYI, the force of friction is equal to the coefficient of static friction times the normal force (equal to the weight of the object).
Does friction bring most moving things to a stop?
True though, Any two objects touching posses friction and friction can result in different factors, like sounds, heat or a resistance. if you rub your hands together, friction here results as heat. Moving parts in a machine or something can producing some kinda sound. When you are drive in your car, friction not only helps you to stick to road, not roll over and acts an a opposing force which will in matter of time stop the car if you don't apply additional force.
Why a horse has to apply more force to start a Tonga than to keep is moving?
Because of friction. Every object has 2 friction coefficient values (called Mu and with its own symbol) - one stationary, and the other while the object is moving. It always takes more force (N) to move an object from a stand-still then it does to keep the same object moving.
What could be done to reduce the effect of friction?
To reduce the effect of friction, you can use lubricants such as oil or grease to create a slippery layer between the surfaces. You can also use smoother surfaces or materials with lower coefficients of friction, or apply anti-friction coatings. Additionally, keeping surfaces clean and maintaining proper alignment of moving parts can help reduce friction.
Why will you need to apply grease when the hinges on the door creaks?
Because the 'creak' is the result of friction generated by the hinge parts moving. Grease or oil deposits a thin film of lubricant between the surfaces, preventing friction (and thus the creak) happening.
How can a door hinge be reduced of friction?
One way to reduce friction in a door hinge is to apply lubricant, such as oil or silicone spray, to the moving parts. Regularly cleaning and removing dirt or debris from the hinge can also help reduce friction. Additionally, adjusting the hinge to ensure it is properly aligned and tightened can help prevent unnecessary friction.
How is friction applied?
Friction is applied, by making the surface of whatever you want to slide across it (the thing you want to apply friction to) is really rough. You can inscrease, and decrease the amount of friction acting on an object by changing the texture, material and smoothness of the surface. Smoother surfaces don't apply much friction to objects, and rougher surfaces apply a lot. An example of this, is Wellington Boots. They have rough underneaths, so you don't fall over - they apply a lot of friction.
