Background:
After a long day of cruising through town with your buddy, the two of you have grown quite an appetite. You spot a McDonalds at the top of a very steep hill. Unfornately a local biker gang must of had the same idea. Encredibly, the only available parking spot is on the street, uphill of nearly 15 Harleys. There are no other restaurants for 100 miles in all directions. Famished, your friend skillfully manuvers his car to the side of the road. The breaks shudder as the car comes to a stop on the hill. He holds the brake, puts it into first, and shuts off the car.
Problem:
Biker's don't take kindly to people messing with their bikes. Your friend is about to let off of the brake. Being the physics major you are, you have to decide whether it's safe to park or safer to go hungry. Your friends car is pretty old, and the e-brake hasn't worked for years. The car will be held in place solely by the moter. There are two mean looking bikers smoking outside entrance. They are watching you so there probably wouldn't be time to make a run for it.
Known
What You Know:
Your buddy's car is classic, and I'm sure he would want to make more than an educated guess. I've done a little investigating to help you out a bit. I took a torque wrench to the motor, and resists it resists aproximately 46 ft*lbs of torque at the crankshaft. After the compression bleeds down this number is reduced to 38 ft*lbs. The cars rear differential has a 3.73 to 1 gear ratio and a manual transmission with a 3.35 to 1 ratio in first gear. The tires are 28 inches in diameter and the gross weight of the car is approximately 2100 lbs. The hill is often travelled by truckers, and on the way up you noticed a sign that said the hill was at a 26 degree angle with the horizontal.
Summary:
When the car is at rest this means it is in a system of static equilibrium. Gravity is pushing forward on the car, and the tires are pushing back on the car via the reaction force of friction in the motor. The steeper the hill, the greater the force of gravity acting on the car, the greater the reaction force in the motor must have. As stated before, the maximum torque that can be applied to the motor before it rotates is 38 ft*lbs.
The story kicks off right away as Duff is leaving his parents’ house in Richmond, Virginia. He is beginning his journey to Los Angeles to be a computer programmer. He leaves his home town in his used three-thousand dollar, white, Ford Escort. He bought the car from the owner of a pizza shop down the street strictly for the long trip. Duff didn’t care much about cars, as longs as they get him from place to place. Duff pulls onto the highway and drives for about fifteen minutes before something goes terribly wrong. A weird noise came from the front of the car and then a loud bang. The car rolled to a stop near a small exit. Duff looked at the engine, but had no hope of knowing what happened. So Duff called a tow-truck which took the car five miles west to a garage in a small hick town. The mechanics diagnosed that he had thrown an engine rod. This usually happens if the engine doesn’t get oiled enough. Duff had no idea of the last oil change since he had only had the car for two weeks.
The Cadillac is the best of motor vehicles given its technological compliance. This is because it has braking pads, which reduce noise. The braking pads of the Cadillac reduce the irritating sound produced the brakes running. The thermoregulation system controls the temperatures of the vehicle. This curbs the brake stresses, which are witnessed in other vehicle models. In this regard, there are no sparks during the functioning of the system.
occurs at the very beginning of the ride, when the cars are pulled up the first hill, or the "lift hill".
Going to the neighbor's land about two miles down the road, my dad, Kurt, had made this trip several times before. Driving along the dirt roads of good old Oklahoma, my dad was making his weekly trip to the neighbors to bale hay. Still slick from the days before, the muddy roads gave no mercy to a passing car. Gripping the road, his tires had never failed him before, but with the road in this condition, he began to slide around. Anyone who has driven on a muddy road knows that if you start to slip, you should turn your tires towards the way you are slipping. Thus, swinging your hood around and safely rolling into the ditch. In Kurt’s position, his tires were facing the wrong way and still proceeding to go farther that way. By the time he, at least, straightened them out, it was too late. The weight of his car shifted to one side and it tumbled into the ditch, rolling about four times before slowing to a rocking motion. In these scary moments, gravity proceeded to break his back and ruin his wrestling career once and for all. In the hospital in very unstable condition laid my dad. After several weeks, his health slowly got better. As soon as he was in stable condition, he insisted on going to therapy to regain his strength and his confidence. Deciding to give up wrestling was a very hard decision for him. He switched to
Road I descended a hill and came upon a narrow bridge. The car went off
Commonly, vehicular collisions are considered a negative occurrence. Dave Eggers hints towards this mindset in his short story Accident. Plotted in the middle of an intersection in 2005, the story commences with the main character driving his automobile through the intersection and striking an older Camaro. The three teenagers in the Camaro are fine, but the main character notices all the damage he has done to their vehicle and he fears an unpleasant encounter with them. Dave Eggers uses irony throughout the situation to illustrate the main character’s relief. The characters’ involvement with the collision emphasizes Egger’s theme that no matter how unfortunate an incident, positivity can result.
In society, any accidents are perceived as negative outcomes illustrate a terrible ending that has taken place but in reality it can be perceived as something positive in the long run. By obstructing the 2005 Camaro and the three teens, it occurred that no one was injured and everything was calm. Accident by Dave Egger represents how a bad decision becomes a point of conflict and symbolism within the theme of the story.
The average driver doesn’t think about what keeps their car moving or what keeps them on the road, but that’s because they don’t have to. The average driver doesn’t have to worry about having enough downforce to keep them on the road or if they will reach the adhesive limit of their car’s tires around a turn. These are the things are the car designers, professional drivers, racing pit crews, serious sports car owners, and physicist think about. Physics are an important part of every sports and racing car design. The stylish curves and ground effects on sports cars are usually there not just for form but function as well allowing you to go speeds over 140 mph in most serious sports cars and remain on the road and in reasonable control.
Driving has been around for just over 100 years, but the first thoughts of physics has been around since 400 BC (to be edited ). Driving safety implications have been discussed and improved over the decades as technology begins to leap ahead of its time. According to physician; Newton, there are three laws of motion that is now used in everyday life to try and help prevent deaths due to driving implications. The first law is “An object at rest will remain at rest unless acted upon on by an unbalanced force.” The object, or Car is in motion continues its motion with the same speed and in the same direction unless acted upon by an unbalanced force. The second law is “Acceleration is produced when a force acts on a mass.” While the third Law of Motion is : “ For every action there is an equal and opposite re-action.This means that for every force there is a reaction force that is equal in size, but opposite in direction.”
This paper is a look at the physics behind car racing. We look look at how we can use physics to select tires, how physics can help predict how much traction we will have, how physics helps modern cars get there extreme speed, how physics lets us predict the power of an engine, and how physics can even help the driver find the quickest way around the track.
very strong just to hold its own weight, let alone the additional load of the elevator’s “car.” Until the
Logan was on his way home from an evening at the local bar. He and some friends had gone out to have a couple beers. As he sped down the road, he blinked vigorously to try to clear his vision. Although it was a perfectly clear summer night, Logan’s vision was blurred from the alcohol. “As long as I keep this car on my side of the road, I’ll be fine,” he thought to himself. He was doing a decent job of obtaining control over the vehicle, or so he thought. Only three miles from his country home, he became unaware of his position on the road as it began to curve. As he continued around the familiar curve in the road, a truck came out of nowhere at hit Logan’s small Toyota Camry head on. The big F-350 pickup truck was no comparison to the little
When I pushed on the gas, the wheels started to make a screeching sound, and the car went forward really fast. We have a truck parked in the drive way also, so when the car started going towards it I turned the wheel and almost went into the neighbor’s fence. I pushed on the break in time and was able to turn the wheel to avoid hitting both the truck and the fence.
Brakes may be one of the most essential inventions in the developments of automobiles. Clearly, nothing can surpass the breakthrough of the wheel, but the brake system was a catalyst to the further developments of cars. The brake system has also evolved greatly throughout the years. Once considered one of the simplest parts of a vehicle, brakes have become one of the most complicated components in a vehicle. The scientific explanation behind a brake system is very rudimentary. Friction permits the concept of braking to occur.
Before the advent of the automobile, buggies were typically propelled by one or more horses. Even with the first automobiles there was a need for a drive system, though, since those horses were no longer there. One thing that has remained common to every car is a motor and transmission system of some sort, but what varies greatly between cars is what is between the transmission and the wheels, also known as the drive train. There are many different styles of drive trains, each with their own advantages and disadvantages.