# An analysis of the momentum lab and the game of pool experiment

Relative slipping occurs at point P, and the resulting frictional force at this location is pointing right. Other factors that help are distributing the force over a large area and time. You end up with the final velocities pointing at right angles away from each other.

Watch a moving cue ball hit a resting pool ball. This means that, while the ycomponents of the velocity still have to cancel, the xcomponents can be different. This avoids preoccupation with the calculation process and allows attention to focus on the results.

There are two additional special cases to consider, involving ball collision.

Select two air track gliders of equal mass. Remember, based on the Law of Conservation of Momentum, after the collision between the golf ball and the ping-pong ball, the total momentum of the system is conserved.

When two billiard balls collide the collision is nearly elastic. Bowling ball, because it has more mass. Accessed October 4, Repeat steps several times and calculate the average angle between the strings.

Notice that, after impact, ball A moves in a direction perpendicular to the direction of ball B.

The internal calculation within the program uses the interruption times from each light gate to obtain two velocities.

There are two types of collisions that relate to momentum: Since the masses mA and mB are equal, this equation simplifies to: The kinetic friction acting at P is given by: Conclusions [c] Wrap up these two activities with an essay that addresses part one and part two including the results you observed and measured.

It is wise to limit the number of decimal places displayed, so that the discrepancy does not appear exaggerated. When the ball is hit sufficiently hard with a leftward force in region A3 the ball is given a leftward velocity, and is given a forward spin in the CCW direction.

It takes energy to crumple the front of the car and this is what absorbs some of the impact. That would not make for a very interesting game, would it? Use marbles of different sizes in part two.

Connect the light gates via an interface to a computer running data-logging software. Would need a greaseless lubricant. In addition, WD40 wound up everywhere - on hands, table tops, soaked into paper that slid into the WD When the ball is hit sufficiently hard with a leftward force in region A2 the ball is given a leftward velocity, and is given a forward spin in the CCW direction.

Does the relationship appear to be linear? Note that for the three cases above, the frictional force that develops due to relative slipping is known as kinetic friction.

Lesson Background and Concepts for Teachers A brief review of the concepts of potential and kinetic energy covered in detail in the previous lesson and momentum, is provided below: Consider the figure below showing the position of the cue at height h.Another elastic collision example can be seen while playing a game of pool.

Watch a moving cue ball hit a resting pool ball. At impact, the cue ball stops, but transfers all of its momentum and kinetic energy to the other ball, resulting in the hit ball rolling with the initial speed of the cue ball. Rolling Momentum Lab Today in lab, we will be experimenting with momentum and measuring the actual force of impact due to momentum of several rolling objects.

Share on Facebook, opens a new window Share on Twitter, opens a new window Share on LinkedIn Share by email, opens mail client Pool is a game of elastic collisions between rigid objects.

Different from inelastic collisions where kinetic energy is not conserved and the kinetic energy that is lost is. Experiment 1: Momentum and Marbles.

The first experiment we did was from a book called “Force and Energy” from Instructional Fair. This book appears to be out of print.

Supplies needed: Two marbles – one small and one.

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Investigating momentum during collisions. Demonstration. A moving glider on a linear air track collides with a stationary glider, thus giving it some momentum. This datalogging experiment explores the relationship between the momentum of the initially moving glider, and the momentum of both gliders after the collision.

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An analysis of the momentum lab and the game of pool experiment
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