How can you resolve the principle of momentum conservation with the seemingly un

Question

How can you resolve the principle of momentum conservation with the seemingly unconserved momentum between moments 2 and 3?
Totally lost by this question and what it is referring to so I included my data and the lab experiment. Thank you. 8. Energy and Momentum Conservation The principles of momentem conservation in a colision and energy conservation in a swinging pendulum ave used to deternine the mechanical enengy lost in a "totally inclastic collision. Apparatus A metal ball, a spring loaded gun, a pendulum with a hollow chamber with a ratchet mechanism to trap the ball, a scale and a meter stick. Physical Principles In this lab a metal ball collides with a plastic chamber at the end of a hanging pendulum. The collision is called "totally inelastic," because the two objects move as one after the collision, thanks to a ratchet mechanism in the chamber. The mechanism traps the ball, preventing it from "elastically" bouncing off the back of the chamber. Three moments of interest must be considered in this process: 1- when the ball is flying towards the pendulum 2 - immediately after the ball's collision with the pendulum 3- when the pendulum reaches its maximum height The principle of momentum conservation will be used to relate moments 1 and 2, and the principle of mechanical energy conservation will be used to relate moments 2 and 3. The principle of momentum conservation states that the total momentum before the collision is equal to the total momentum after the collision. Since the chamber has no momentum before the collision, this means that the ball's momentum before the collision is equal to the pendulum's momentum just after the collision: where mo represents the mass of the ball, m represents the mass of the pendulum with the ball in its chamber, vi represents the velocity of the ball just before the collision, and ½ represents the initial velocity of the pendulum's center of mass just after the collision.

Explanation / Answer

As your experiment already explain the concept used, you are unable to resolve the principle of momemtum conservation with the moments 2 and 3,

actually, you are patially right and partially wrong.

Moment 2 describe use of momentum just after the hitting of pendulum with the momentum of ball, here concept is easy and straight forward to understand.

momentum conservation is applicable here with the two situation. and momentum is conserved just before and just after the collision (Please focus 'just after and just before')

But moment 3 cannot be used in conservation of momentum, here we have to use the concept of conservation of energy with the energy just after the collision and energy at the highest point.

there is no confusion in determining energy at these two points.

Go ahead and read carefully.

Thankyou

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