Cork is short for corkscrew

The phrase “___ out west” actually refers to doing something or something taking place for or in West System G/flex® 650 is a toughened, versatile, liquid epoxy for permanent waterproof bonding of fiberglass, ceramics, metals, plastics, and damp and difficult-to-bond woods. It is a bit more flexible than standard epoxies and polyester but much stiffer than adhesive sealants. This gives it the ability to make structural bonds that can absorb the stress of expansion, contraction, shock, and vibration. It is ideal for bonding dissimilar materials. It can be modified with WEST SYSTEM® fillers and additives and used to wet out fiberglass tapes and fabrics. This system is simple to use with its 1:1 mix ratio by volume.
 
14626578:weastcoat said:
The phrase “___ out west” actually refers to doing something or something taking place for or in West System G/flex® 650 is a toughened, versatile, liquid epoxy for permanent waterproof bonding of fiberglass, ceramics, metals, plastics, and damp and difficult-to-bond woods. It is a bit more flexible than standard epoxies and polyester but much stiffer than adhesive sealants. This gives it the ability to make structural bonds that can absorb the stress of expansion, contraction, shock, and vibration. It is ideal for bonding dissimilar materials. It can be modified with WEST SYSTEM® fillers and additives and used to wet out fiberglass tapes and fabrics. This system is simple to use with its 1:1 mix ratio by volume.
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Yo check out this sick corkscrew seven hundred and twenty degree rotation whilst grabbing the ski in the blunted position
 
14626673:deac said:
what I dont understand, explain it
Click to expand...

Sure! Here's that explanation:

A cork in skiing, when analyzed through the lens of physics, involves complex rotational dynamics and angular momentum, where the skier's motion deviates from standard planar rotation.

Here’s a more technical breakdown of the physics behind a cork trick:

1. Angular Momentum (L):

In a cork, the skier performs a spin with angular momentum, which is a vector quantity defined as:

L=I⋅ω

L=I⋅ω

where II is the moment of inertia (which depends on the skier’s mass distribution) and ωω is the angular velocity vector. Angular momentum is conserved unless acted upon by an external torque.

2. Off-axis Rotation:

During a cork, the skier's axis of rotation is not aligned with any of the standard reference axes (i.e., horizontal or vertical). Instead, the skier tilts their body, so they are rotating along a tilted axis. This creates an off-axis rotation, which means:

The skier’s center of mass follows a curved trajectory, not a simple circle or ellipse.

The angular velocity vector ωω changes direction as the skier adjusts their body mid-air, using muscle control to shift their mass distribution and manipulate their moment of inertia.

3. Precession and Gyroscopic Effect:

As the skier rotates off-axis, there is a precession-like behavior where the axis of rotation itself moves. This is similar to how a spinning top wobbles around its axis. In a cork, this effect comes from the complex combination of rotations around multiple axes (both the vertical and off-axis). The skier’s center of mass follows a smooth arc, with their body precessing around this axis, while remaining in rotational motion.

4. Conservation of Angular Momentum:

No external torques (other than air resistance) act significantly on the skier, so the total angular momentum is conserved. However, the skier manipulates their moment of inertia II by changing their body position (for example, tucking in their arms or extending their legs). According to the conservation principle:

I1⋅ω1=I2⋅ω2

I1​⋅ω1​=I2​⋅ω2​

As the skier tucks in or extends their body, the moment of inertia changes, causing a corresponding change in angular velocity to maintain constant angular momentum. For example, pulling arms and legs in tight increases rotational speed (higher ωω).

5. Gravity and Center of Mass:

While the skier is airborne, gravity exerts a constant downward force, influencing the parabolic trajectory of the skier’s center of mass. However, because the skier is rotating off-axis, their body’s mass distribution around the center of mass creates a distinctive tilted spin, which gives the appearance of a corkscrew-like motion.

6. Inertia and Air Resistance:

Air resistance acts against the skier’s motion, but since the skier's body position changes throughout the trick, it causes minor perturbations to their angular velocity. The skier often adjusts their orientation to maximize control while minimizing air drag, enabling smoother rotations.

7. Axis Manipulation:

As the skier completes the cork trick, they often "spot" the landing. This requires controlling rotational axes by extending or retracting limbs, which adjusts their moment of inertia, slows or speeds up rotations, and reorients them to land stably. This adjustment is crucial to align their rotational axes for a smooth landing.

In summary, a cork skiing trick involves a combination of rotational dynamics (conservation of angular momentum and off-axis rotation), manipulation of body position to control the moment of inertia, and the effects of gravity and air resistance, all contributing to the skier’s ability to perform complex aerial maneuvers while maintaining control and stability in mid-air.

TLDR: Cork is short for corkscrew

**This post was edited on Sep 11th 2024 at 2:05:27pm
 
14626682:Kretzschmar said:
Sure! Here's that explanation:

A cork in skiing, when analyzed through the lens of physics, involves complex rotational dynamics and angular momentum, where the skier's motion deviates from standard planar rotation.

Here’s a more technical breakdown of the physics behind a cork trick:

1. Angular Momentum (L):

In a cork, the skier performs a spin with angular momentum, which is a vector quantity defined as:

L=I⋅ω

L=I⋅ω

where II is the moment of inertia (which depends on the skier’s mass distribution) and ωω is the angular velocity vector. Angular momentum is conserved unless acted upon by an external torque.

2. Off-axis Rotation:

During a cork, the skier's axis of rotation is not aligned with any of the standard reference axes (i.e., horizontal or vertical). Instead, the skier tilts their body, so they are rotating along a tilted axis. This creates an off-axis rotation, which means:

The skier’s center of mass follows a curved trajectory, not a simple circle or ellipse.

The angular velocity vector ωω changes direction as the skier adjusts their body mid-air, using muscle control to shift their mass distribution and manipulate their moment of inertia.

3. Precession and Gyroscopic Effect:

As the skier rotates off-axis, there is a precession-like behavior where the axis of rotation itself moves. This is similar to how a spinning top wobbles around its axis. In a cork, this effect comes from the complex combination of rotations around multiple axes (both the vertical and off-axis). The skier’s center of mass follows a smooth arc, with their body precessing around this axis, while remaining in rotational motion.

4. Conservation of Angular Momentum:

No external torques (other than air resistance) act significantly on the skier, so the total angular momentum is conserved. However, the skier manipulates their moment of inertia II by changing their body position (for example, tucking in their arms or extending their legs). According to the conservation principle:

I1⋅ω1=I2⋅ω2

I1​⋅ω1​=I2​⋅ω2​

As the skier tucks in or extends their body, the moment of inertia changes, causing a corresponding change in angular velocity to maintain constant angular momentum. For example, pulling arms and legs in tight increases rotational speed (higher ωω).

5. Gravity and Center of Mass:

While the skier is airborne, gravity exerts a constant downward force, influencing the parabolic trajectory of the skier’s center of mass. However, because the skier is rotating off-axis, their body’s mass distribution around the center of mass creates a distinctive tilted spin, which gives the appearance of a corkscrew-like motion.

6. Inertia and Air Resistance:

Air resistance acts against the skier’s motion, but since the skier's body position changes throughout the trick, it causes minor perturbations to their angular velocity. The skier often adjusts their orientation to maximize control while minimizing air drag, enabling smoother rotations.

7. Axis Manipulation:

As the skier completes the cork trick, they often "spot" the landing. This requires controlling rotational axes by extending or retracting limbs, which adjusts their moment of inertia, slows or speeds up rotations, and reorients them to land stably. This adjustment is crucial to align their rotational axes for a smooth landing.

In summary, a cork skiing trick involves a combination of rotational dynamics (conservation of angular momentum and off-axis rotation), manipulation of body position to control the moment of inertia, and the effects of gravity and air resistance, all contributing to the skier’s ability to perform complex aerial maneuvers while maintaining control and stability in mid-air.

TLDR: Cork is short for corkscrew

**This post was edited on Sep 11th 2024 at 2:05:27pm
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thanks
 
14626724:Kretzschmar said:
Party and BS stands for Party and Bullshit in case you're new here
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my initials are bs as well. so party and bs is a play on words as an ode to the greatest rapper of all time B.I.G. and his break through single party and bullshit, my love to party, and my initials. that's why i picked it as a screen name over a decade prior to anyone with a similar screenname coming on to the site. but its fine. im not worried about it. not worried at all.
 
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