Bottle flipping was a trend that involved throwing a plastic bottle, typically partially whole of liquid, into the air so that it rotates in an attempt to land it upright on its base or cap. It became an international trend in the summer of 2016, with numerous videos of people attempting the activity being posted online. With its popularity, the repetitive thuds of multiple attempts have been criticized as a distraction and a public nuisance. Parents and teachers have expressed frustration at the practice, resulting in water bottle flipping being banned at several schools worldwide and many people calling for the practice only to be performed in private. This activity of bottle flipping was invented by KC Beach in 2009 with his Brentwood wrestling team while they were waiting at weight certifications. [7]
In 2016, a viral video of teenager Mike Senatore flipping a water bottle at a talent show at Ardrey Kell High School in Charlotte, North Carolina popularized the activity. [8] [9] [10]
Water bottle flipping involves taking a plastic water bottle that is partially empty and holding it by the neck of the bottle. [6] [8] Force is applied with a flick, with the bottom of the bottle rotating away from the person. [6] [8] If performed successfully, the bottle will land upright. [8] [9] Alternatively, the bottle may land upside-down or on its cap. Doing this is significantly more difficult than flipping a bottle so it lands upright. [11] The amount of fluid in the bottle greatly influences the success of the feat, and it has been shown empirically that filling the bottle about one-third of the way improves the rate of success. [6] [8] The type of water bottle also plays a role; for instance, the brand Deer Park Spring Water has been noted to make the task easier due to its unique hourglass shape with a third divot. [9]
The feat is often performed with disposable plastic water bottles due to their availability. Still, other containers can be used as well. [1] [12] The bottle flip is often combined with the Dab after a successful flip. The complex physics behind the activity incorporates concepts of fluid dynamics, projectile motion, angular momentum, centripetal force, and gravity. [6] [13] In 2018, a group of students and professors from the Netherlands developed a minimal model of the water bottle flip involving conservation of angular momentum and, most importantly, the redistribution of mass along the bottle. The model estimates that the best-filling fractions for water flipping lie in the range between 20% and 40%. [14]
Multiple mobile apps have been created to recreate the activity; the app "Bottle Flip 2k16" was downloaded 3 million times in the first month of its release. [15]
Precession is a change in the orientation of the rotational axis of a rotating body. In an appropriate reference frame it can be defined as a change in the first Euler angle, whereas the third Euler angle defines the rotation itself. In other words, if the axis of rotation of a body is itself rotating about a second axis, that body is said to be precessing about the second axis. A motion in which the second Euler angle changes is called nutation. In physics, there are two types of precession: torque-free and torque-induced.
Rotation or rotational motion is the circular movement of an object around a central line, known as axis of rotation. A plane figure can rotate in either a clockwise or counterclockwise sense around a perpendicular axis intersecting anywhere inside or outside the figure at a center of rotation. A solid figure has an infinite number of possible axes and angles of rotation, including chaotic rotation, in contrast to rotation around a fixed axis.
In fluid dynamics, a vortex is a region in a fluid in which the flow revolves around an axis line, which may be straight or curved. Vortices form in stirred fluids, and may be observed in smoke rings, whirlpools in the wake of a boat, and the winds surrounding a tropical cyclone, tornado or dust devil.
The Kerr metric or Kerr geometry describes the geometry of empty spacetime around a rotating uncharged axially symmetric black hole with a quasispherical event horizon. The Kerr metric is an exact solution of the Einstein field equations of general relativity; these equations are highly non-linear, which makes exact solutions very difficult to find.
A rotating black hole is a black hole that possesses angular momentum. In particular, it rotates about one of its axes of symmetry.
A water rocket is a type of model rocket using water as its reaction mass. The water is forced out by a pressurized gas, typically compressed air. Like all rocket engines, it operates on the principle of Newton's third law of motion. Water rocket hobbyists typically use one or more plastic soft drink bottle as the rocket's pressure vessel. A variety of designs are possible including multi-stage rockets. Water rockets are also custom-built from composite materials to achieve world record altitudes.
A water bottle is a container that is used to hold liquids, mainly water, for the purpose of transporting a drink while travelling or while otherwise away from a supply of potable water.
Rotation around a fixed axis or axial rotation is a special case of rotational motion around an axis of rotation fixed, stationary, or static in three-dimensional space. This type of motion excludes the possibility of the instantaneous axis of rotation changing its orientation and cannot describe such phenomena as wobbling or precession. According to Euler's rotation theorem, simultaneous rotation along a number of stationary axes at the same time is impossible; if two rotations are forced at the same time, a new axis of rotation will result.
The cat righting reflex is a cat's innate ability to orient itself as it falls in order to land on its feet. The righting reflex begins to appear at 3–4 weeks of age, and is perfected at 6–9 weeks. Cats are able to do this because they have an unusually flexible backbone and no functional clavicle (collarbone). The tail seems to help but cats without a tail also have this ability, since a cat mostly turns by moving its legs and twisting its spine in a certain sequence.
A Feynman sprinkler, also referred to as a Feynman inverse sprinkler or reverse sprinkler, is a sprinkler-like device which is submerged in a tank and made to suck in the surrounding fluid. The question of how such a device would turn was the subject of an intense and remarkably long-lived debate. The device generally remains steady with no rotation, though with sufficiently low friction and high rate of inflow, it has been seen to turn weakly in the opposite direction of a conventional sprinkler.
The magnetorotational instability (MRI) is a fluid instability that causes an accretion disk orbiting a massive central object to become turbulent. It arises when the angular velocity of a conducting fluid in a magnetic field decreases as the distance from the rotation center increases. It is also known as the Velikhov–Chandrasekhar instability or Balbus–Hawley instability in the literature, not to be confused with the electrothermal Velikhov instability. The MRI is of particular relevance in astrophysics where it is an important part of the dynamics in accretion disks.
Ardrey Kell High School is a public high school serving grades 9–12 in the Ballantyne area of Charlotte, North Carolina, United States. The school is part of Charlotte-Mecklenburg Schools district.
Algodoo is a physics-based 2D freeware sandbox from Algoryx Simulation AB as the successor to the popular physics application Phun. It was released on September 1, 2009 and is presented as a learning tool, an open ended computer game, an animation tool, and an engineering tool.
This glossary of physics is a list of definitions of terms and concepts relevant to physics, its sub-disciplines, and related fields, including mechanics, materials science, nuclear physics, particle physics, and thermodynamics. For more inclusive glossaries concerning related fields of science and technology, see Glossary of chemistry terms, Glossary of astronomy, Glossary of areas of mathematics, and Glossary of engineering.
Neknominate, also known as neck and nominate, neknomination or neck nomination, is an online drinking game. The original rules of the game require the participants to film themselves drinking a pint of an alcoholic beverage, usually beer, in one gulp and upload the footage to the web. A participant then nominates another person to do the same within 24 hours.
In baseball, a bat flip is the throwing of a baseball bat in such a way that it rotates several times before landing. It is typically done by a batter to show off after hitting a home run. This is in contrast to the usual practice of dropping the bat straight down as the batter begins running to first base.
Glugging is the physical phenomenon which occurs when a liquid is poured rapidly from a vessel with a narrow opening, such as a bottle. It is a facet of fluid dynamics.