Puck in Ice, coriolis force

In summary, the Coriolis force is a fictitious force that appears to act on objects in a rotating reference frame. In the case of a puck moving in Earth's rotating frame, the Coriolis force acts perpendicular to the puck's velocity, causing it to move in a circular path. This can be calculated using the equation Fc = -2mωvz, where ω is the angular velocity of the rotating frame and vz is the component of the puck's velocity in the z-direction.
  • #1
m0nk3y
27
0
Show that the Coriolis force makes the puck move in a circle as seen in Earth's rotating frame


I need help setting this up!

Homework Equations



-2m[tex]\varpi[/tex]x v

The Attempt at a Solution


So far i have a drawing
The Earth on an xyz axis, z up, y across, and x in an out of paper.
the puck is on the surface the earth, it coordinate system is, directly abouve the puck pointing towards the north pull we have the y axis, its z axis extends from the origin of the Earth and its x-axis is going into and out of the paper.

I need help setting up the [tex]\varpi[/tex]

THANK you in advance, i know this will be hard to understand.
 
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  • #2


Hello!

To show that the Coriolis force makes the puck move in a circle, we first need to understand the Coriolis force. The Coriolis force is a fictitious force that appears to act on objects moving in a rotating reference frame. In this case, the reference frame is Earth's rotating frame, with the origin at the center of the Earth and the z-axis pointing towards the North Pole.

To set up the equation for the Coriolis force, we need to first define some variables. Let's say that the puck has a mass of m and is moving with a velocity v in the x-direction. The Coriolis force, Fc, can be calculated using the formula Fc = -2mω×v, where ω is the angular velocity of the rotating frame.

Next, we need to determine the direction of the Coriolis force. Since the puck is moving in the x-direction, the Coriolis force will act in the y-direction, perpendicular to the puck's velocity. This can be represented as Fc = -2mωvz, where vz is the component of the puck's velocity in the z-direction.

Now, let's consider the motion of the puck in the rotating frame. Since the puck is moving in a straight line in the x-direction, it will appear to be moving in a circular path in the rotating frame due to the Coriolis force acting on it. This is because the Coriolis force acts perpendicular to the puck's velocity, causing it to change direction and move in a circular path.

To better understand this, let's break down the Coriolis force equation. The -2m term represents the strength of the force, while ω represents the angular velocity of the rotating frame, which is determined by the Earth's rotation. The v term represents the puck's velocity, and the vz term represents the component of the puck's velocity in the z-direction.

In conclusion, the Coriolis force, when acting on a moving object in Earth's rotating frame, causes the object to move in a circular path. This is due to the perpendicular nature of the force to the object's velocity, causing it to change direction and move in a circular path. I hope this helps to set up the equation for the Coriolis force and understand its role in making the puck move in a circle in Earth's rotating frame.
 

What is the Puck in Ice experiment?

The Puck in Ice experiment is a popular demonstration used to illustrate the Coriolis force, which is the apparent deflection of an object's path due to the rotation of the Earth.

How does the Coriolis force affect the Puck in Ice experiment?

In the Puck in Ice experiment, the Coriolis force causes the puck's path to curve to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. This is due to the rotation of the Earth, which creates an inertial force that acts on moving objects.

What factors affect the magnitude of the Coriolis force in the Puck in Ice experiment?

The magnitude of the Coriolis force in the Puck in Ice experiment is affected by the speed and direction of the puck, as well as the latitude at which the experiment is conducted. The closer the object is to the poles, the greater the Coriolis force will be.

What real-world phenomena are affected by the Coriolis force?

The Coriolis force plays a role in many natural phenomena, including the rotation of hurricanes and the direction of ocean currents. It also affects the flight paths of airplanes and the trajectory of long-range projectiles.

Is the Coriolis force the only force acting on the Puck in Ice?

No, the Coriolis force is not the only force acting on the Puck in Ice. Other forces, such as friction and gravity, also play a role in the movement of the puck. However, the Coriolis force is the dominant force in this experiment and is responsible for the puck's curved path.

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