Essay PreviewMore ↓
Acceleration and velocity are mostly dependent on the number of dogs, the quality of the dogs, and how well the dogs have been trained, but it also can depend on friction and inertia. The lager mass an object has the the more weight it has and the more inertia it has.
Weight effects acceleration by increasing friction. Friction is f = µN where µ is the coefficient of friction, N is the normal force, and f is friction. The normal force is equal to mass times gravity assuming no other downward forces are applied. Therefore the more weight in both sled gear and musher the dogs have to haul the lower the velocity and the slower the acceleration will be due to friction between the runners and the ground.
Inertia effects acceleration because inertia is the tendency of objects to ether stay at rest or stay in motion. In this case since the point is to move we are more concerned about staying at rest. When starting the dogs have to pull harder to get the sled moving then they do to keep it moving to both overcome the effects of inertia and to change the fiction from static friction to kinetic friction.
Force is necessary to start all motion, and in the presence of friction force is needed to maintain a constant velocity. In mushing a vast majority of the force comes from the dogs, and depending on the musher as a small amount to no force comes from the musher (assuming flat terrain).
Mathematically F = ma where "F" is force, "m" is mass, and "a" is acceleration. this tells us that if the velocity is constant then the sum of the forces equals 0(F = 0). this doesn't mean the dogs aren't applying any force it just means that they are only applying enough force to over come any friction that might be resting the forward motion.
The dogs apply this force by pulling on the tug lines which leads to a gangline which is attached to the sled. some mushers place a shock absorber between the sled and the gangline to both ease jolts from the dogs accelerating from a stop and to reduce the jolt on the dogs from large bumps in the trails.
The dogs are only doing work when they are accelerating because W = Fd where W is work, F is force, and d is distance.
How to Cite this Page
"Physics of Dog Mushing." 123HelpMe.com. 20 Jul 2018
Need Writing Help?
Get feedback on grammar, clarity, concision and logic instantly.Check your paper »
- ABSTRACT Several researchers have devoted efforts on studying physics of arc and descriptive models are used to explain many arc welding related phenomena. However, due to the subject complexity, doubts still emerge about the mechanisms of some phenomena related to the arc. For instance, the description about electromagnetic interactions with the arc, which governs the arc trajectory and lead to plasma jet and arc blow formation, seems to be yet controversial. Thus, the present study aimed a better understanding of these phenomena.... [tags: Physics ]
1244 words (3.6 pages)
- The Physics of Fishing The use of a boat while fishing and some of the physics applicable to boating will be included in exploring the various ways physics applies to the sport of fishing. Other topics will include the fishing rod, fishing lure, casting, and the fish itself. The boat floats on the water according to Archimedes Principle which states an immersed object is buoyed up by a force equal to the weight of the fluid it displaces. The force applied downwards by earth’s gravity coupled with the upward force of buoyancy allows the boat to float.... [tags: Physics ]
871 words (2.5 pages)
- i: Introduction You apprehensively walk up the iron steps and onto the platform. You’re reluctant to go any further, but your friend eggs you on, saying, “It’s not that fast.” You step into the seat and pull the harness down over you. No, this isn’t the latest, greatest technological frontier. It’s a roller coaster. Since 1804 when the first wheeled roller coaster- called “Les Montagnes Russes”- was constructed in Paris, France, roller coasters have been a staple of adventure and fantasy among children and children-at-heart.... [tags: Physics]
1556 words (4.4 pages)
- A roller coaster is a thrill ride found in amusement and theme parks. Their history dates back to the 16th century. It all started in Russia, with long, steep wooden slides covered in ice. The idea then traveled to France. Since the warmer climate melted the ice, waxed slides were created instead, eventually adding wheels to the system. The first roller coaster in which the train was attached to the track was in France in 1817, the Russess a Belleville. The first attempt at a loop-the loop was also made in France in the 1850s.... [tags: Physics]
866 words (2.5 pages)
- What has four legs and an arm. A happy pit bull. What happens when you cross a pit bull with a collie. A dog who bites your leg off, then goes for help. Contrary to tasteless jokes and public opinion, it is not the breed of dog that makes a dog dangerous, rather it is the owner of a dog that makes dogs dangerous. But, let’s face it, there are certain dog breeds that demand their owners be aware of negative opinion; and it is the owners’ primary responsibility to implement careful training and socialization of their pups in order to bring an understanding and acceptance of the breed by the general public.... [tags: dog owners, pets, ]
1330 words (3.8 pages)
- INTRODUCTION Physics attempts to describe the fundamental nature of the universe and how it works, always striving for the simplest explanations common to the most diverse behaviour. For example, physics explains why rainbows have colours, what keeps a satellite in orbit, and what atoms and nuclei are made of. The goal of physics is to explain as many things as possible using as few laws as possible, revealing nature's underlying simplicity and beauty. Physics has been applied in many industrial fields, which include the air industry, construction industry, automobile industry, manufacturing industry and many others.... [tags: Physics]
1954 words (5.6 pages)
- Basic Concepts Issac Newton was the first to state the concepts that are necessary to understanding the physics of collisions. His three laws are used again and again in all the fields of physics: Newton's 1st Law In the absence of external forces, an object at rest remains at rest and an object in motion remains in motion with a constant velocity. This law can be best observed in space, far from the gravity of a star or planet, where there is no friction or air resistance. If, in the middle of deep space, you give a rock a little push, it will continue with the direction and velocity you gave it forever.... [tags: Physics]
2442 words (7 pages)
- Remote Sensing is the science of acquiring, processing and interpreting images that record the interaction between the electromagnetic energy and matter (Sabins, 1997). Remote sensing offers extensive applications in almost every area of science from monitoring forest fires to geologic mapping . Although many aspects of remote sensing are complex and difficult to understand the basic theory behind remote sensing is simple physics. There are four major stages of remote sensing. The first stage is the source of energy, usually the sun, which sends energy to a target.... [tags: Physics]
1142 words (3.3 pages)
- To Dance with the White Dog One Work Cited Terry Kay writes a stirring novel called To Dance with the White Dog. In the beginning of the novel, the main character, Sam Peek, loses his wife, Cora Peek, to a heart attack. Soon after, Sam begins to see a mysterious white dog that hides from everyone, including his children. Kay never reveals if White Dog is in fact real or simply a figment of Sam Peek's imagination, but several plot elements lead a reader to believe that White Dog is in fact a real animal[b1].... [tags: White Dog Essays]
563 words (1.6 pages)
- Korean Dog Eating Tradition The Korean practice of eating dog meat has always been considered a peculiar tradition by foreigners. In recent years, this tradition has come under increasing pressure from animal rights activists, including Bridget Bardot, who wish to see the practice outlawed altogether by the South Korean government. This controversy came to a head in 2002, when activists convinced FIFA to put pressure on South Korea, the co-host of the World Cup, to ban dog meat. William Saletan discusses this controversy in his article ?Wok the Dog,.... [tags: Wok Dog Saletan Essays]
1186 words (3.4 pages)
Friction in dog sledding is both good and bad. It allows you to turn and slow down when you want to but it also slow you down and makes the dogs and the musher work harder.
Friction as a good thing
however this you need a lot of friction to take corners without sliding sideways and crashing. The way dog mushers get a round this is by building the sled so that it will flex when the musher leans.
This flexing turns the edge of the runner downward so it can dig into the snow creating lots of friction in the sideways direction, but because the front has no weight the friction in the front of the sled is still small. This allows the force of the dogs pulling to pull it around the corner. This turns the runners perpendicular to the momentum of the sled and preventing sliding.
Another good thing about friction is the ability to both start and stop. The dogs require friction to pull, so if you put you and your team out on a frozen pond that is near frictionless because of the glare ice. you can't expect to go any where very quickly because the dogs will slip every time they try to pull. Thankfully dogs have toe nails to help prevent this from ever happening.
Stopping is usually considered a good ability to have and even though the dogs are supposed to stop on command you still don't want to have a sled with a person and gear slamming into all you dogs. So of coarse the way to prevent this is to put a brake on the sled. Brakes are usually just sharp medal spikes with a flat bar across to step on. When weight is applied to the brake the spikes or teeth dig into the snow and greatly increase the friction. This slows the sled by countering the force that is applied by the dogs.
Mushers also use a snow hook to stop If there is ether something wrong or they just want to stop for a while.
The Idea of this is to make the frictional resistance so height that the dogs can't reasonably pull the sled.
Friction as a bad thing
Reducing friction between the runners the and the snow has been a major concern for mushers for many years.
Before plastic musher would ether split a spruce log in half and peal it to make a smooth surface. However, the runners would dry out and loose some of their smoothness and they would also sink deeper then flat runners. They also used steel or iron runners. These floated better but didn't work well on exposed ground and tundra, and in addition to this the dog excrement would freeze to the medal runners and drastically increase the friction.
Today mushers have a wide variety of plastic runners to choose from that can be picked to mach the conditions that are he or she is facing that particular day. This has shown to reduce friction by many times that of the medal or wooden runners. Competitive mushers to day have to decide what density plastic they need before starting a race. If conditions are more favorable they might choose a softer plastic that will not give much resistance, but if conditions are harsh then they will try a harder plastic so that it doesn't gauge and scrape quite as easily.