This study was done by Walker et al to find out what the role of a cat’s tail regarding its balance. The Scientist used four different adult cats. All of the cats walked a runway and two of the cat jumped up and down from a table. To better see how the tails reacted, the scientist shaved all of the cat’s tails every week. The scientist had the cats walk the bride and would randomly move the runway left and right after the cat passed the half way point. The scientist chose random trails to move the runway because they did want the cats to find a pattern and adjust their balance. The scientist measured how long it took the cats to go the full distance and from the recordings, they measured how much the tail bent in response to the movement of …show more content…
When a cat is put off balance, it moves its tail in the opposite direction of the force that threw it off balance. Since Walker et al showed that cats use their tails for balance when their paws are busy, McCarty researched the force of landings. McCarthy performed this experiment because if they could figure out how a cat is able to land from a fall with little to no injury, that it could be applied to other places like robotics.
McCarthy
This Study done by McCarthy was to find out the force of an impact on a cat when landing on its feet. The formula that McCarthy used was the force (F) equals the mass (m) multiplied by the change in velocity (∆ v/t) which gives you F = m ∆(v/t ). The cat in the experiment weight about 5.37 kg, which would be used as the mass of the cat. McCarthy used a Vernier Force Plate with a plank of wood on top so they could measure force and tension of the cat landing on it. The cat was held in the same place and was dropped from five different heights, each height was tested three times. McCarthy also tested a 3.32 kg medicine ball to test an inanimate object against the cat (McCarthy
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The medicine ball was also dropped from the same height as the cat to test if the cat will reduce its force of impact. After all the testing was done it was very clear that force on the on cat, which was about 2 kg less, was a lot less then the medicine ball. As shown in Figure 3 the cat and the medicine ball’s maximum force increased as the height increased, but the medicine ball increased linearly, while the cat’s line was more curved. Since the cat’s graph is curved and a lot lower than the medicine ball, the cat manipulates its body to lessen the forces that it experiences in a fall (McCarthy
In the lab of “The Falling Eggs and Automotive Lab”, we had to design a protective device able to hold the egg and allowing it survive from the impact of hitting the ground from the top of the staircase. We did this lab to investigate newton’s Laws and prove how they work. In the lab, we have to observe the forces that act on the egg and evaluate the way they work. We do this lab with an egg to relate to a real life collision with a car. The egg is essentially the person and the device that the egg is in is the Airbag. We use our knowledge about airbags and apply that to this lab in order to make the egg survive and not crack.
Conservation of Energy Lab: Poppers Part 1. The problem addressed in this lab is that of whether conservation of energy can be applied to “real-world” trials to calculate predictions. My group approached the popper lab by testing the height of a steel ball when launched from the popper and using those observations to calculate predictions for the heights of other balls of different masses. The values we chose to collect were the initial height, initial velocity, height at its peak, velocity at its peak, and the “change in length” of the popper (really, the height of the popper). We assumed there was no air resistance or other frictional forces on the ball.
The purpose of this experiment was to determine if cats have a color preference. I wanted to do this experiment because I took an interest in my cat’s vision. My hypothesis was that my cat would prefer the color blue. I used 5 different colored balls of yarn. They were placed in the same spots and sequence each time. I conducted this experiment for a total of four-weeks. I set my cat up behind a line of painter’s tape and let her approach a yarn ball and play with it. I recorded how many times she approached each color. At the end of the experiment I discovered that my hypothesis was not supported. My cat chose to play with the yarn colored black rather than
sturdy while the child falls – his feet is not big enough for him to
Evidence #2 - "In the early days of rocket science, no one knew what the effects of weightlessness would be. Animals — mainly dogs, monkeys
These methods are used to identify kinematic parameters without discomfort to the animal. Force plates, video/high speed cameras or 3D motion cameras cannot be used as there is no access to this software and technology, however the information that will be acquired in this study will use alternative software and methods that will support evidence obtained.
In the last couple weeks we have been studying the different types of energy, There are many type of energy ( ex: Potential and Kinetic) Were the main two energies used in the Alley Cat bowling experiment. Potential energy is the energy stored up in an object and the kinetic energy is the energy being used when an object is moving, My hypothesis for this experiment was If we had a “bowling ball” that weighed more the ball would knock over all or most of the pins. My group Had an idea that maybe the higher the ball rolled down the fast it could be for the ball to hit the pins. We decide to put all of our data in a chart so everything would stay in place and be easier to find. “What Recommendations will you give the Alley cats
The cuticular makes up the outermost layer of hair and consist of overlapping scales. The cuticular comprises of various shapes that are unique among species and are therefore valuable for identification purposes . The cuticle was analysed based on four properties; the position of the scales in relation to the longitudinal axis of the hair, the structure of the scale margin, the distance between scales and the scale pattern.
A stopwatch was used to time the duration of falling down the steps. When pushed the stopwatch was started. As the slinky reached the bottom step, the stopwatch was stopped. The experiment was repeated three times with a medium slinky, and three times with a large slinky. The results from the experiment revealed that the slinky traveled down the stairs slower when mass
5 years ago, “a cat in the US city of Boston survived a fall from a 19-storey window and only bruised her chest. How do cats survive falls from such great heights?” Can they survive all falls?
An intriguing experiment was conducted in 2015 by Merola, Lazzaroni, Marshall-Pescini, and Prato-Previde. They coordinated this examination to understand the relationship between a cat and its owner. They wanted to see if the owners' input about an object influenced the cat’s action and behavior towards the object (Merola, Lazzaroni, Marshall-Pescini & Prato-Previde, 2015). The test included thirty-six cats and all the owners were female except for one male owner. Out of these cats, there were different numbers of cat that were neutered and tom cats. As well as, different sexes. Each cat was tested individually in a testing room. The cat was allowed one minute to explore the room at the beginning with the owner in a set position and relaxed.
Occasionally when my dogs are pooping, they will waddle around in their hunched over position. I believed this would be similar to when they circle their beds, and they were just trying to arrange the ground slightly. But, apparently, many dogs prefer to poop while aligned with the geometric north and south directions. Scientists are not sure why they prefer to poop in the northern or southern direction but found that many dogs avoid pooping while facing either east or west. There may not be any underlying reason other than an internal instinct. But now I know why my dogs do the weird poop waddle.
Animal gait analysis will be performed in special walkway maze before the DMM surgery and four months later after surgery. All experiments will be performed during the same period. Briefly, animals will be trained to cross the walkway maze daily before DMM or sham operation. During the test, each animal should be placed individually in the catwalk maze, which consists of glass plate and Plexiglas partition walls.The mouse is allowed to walk freely and traverse from one side to the other of the walkway glass plate. Two infrared light beams spaced 90 cm apart will be used to detect the arrival of the mouse and control the start and end of data acquisition. An LED light from an encased fluorescent lamp is emitted inside the glass plate and completely
Seen in slow motion, the second a cat begins to fall it will start determining up from down and he will rotate his head directed by his eyes and sense of balance in his ears, until he’s facing that way. His spine then follows as he arches his back, then his front paws followed by his back legs. Lastly he places his front paws close to his head to spare it from the grounds impact, the cat’s leg joints bear the impact of the weight. While falling the cat’s fall kind of resembles the one of a parachute. Kittens learn to master this skill at the age of just 7
backs and they were dragging their hind legs (Reed 38). While in the lab, the