M (e) In another experiment, the block is pushed against the spring and released. Instead of launching off the table it collides and sticks to a long uniform rod pivoted around the end as shown above. Which of the following quantities, if any, are not constant during the collision? • Kinetic Energy • Linear Momentum Angular Momentum
M (e) In another experiment, the block is pushed against the spring and released. Instead of launching off the table it collides and sticks to a long uniform rod pivoted around the end as shown above. Which of the following quantities, if any, are not constant during the collision? • Kinetic Energy • Linear Momentum Angular Momentum
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Transcribed Image Text:**Physics Collision Experiment: Analysis of Conservation Quantities**
**Experimental Setup:**
The image depicts a block-spring system arranged on a table, positioned next to a vertical rod. The table surface is free of any obstructions in the path of the block.
- **Key Elements:**
- *Spring*: The block is pushed against it, compressing the spring a distance of \( L \).
- *Block*: Denoted by mass \( M \), placed at the equilibrium position of the spring.
- *Rod*: A long, uniform rod of unspecified mass, pivoted at one end and free to rotate.
**Procedure:**
1. The block is pushed against the spring and then released.
2. The released block moves and collides with the rod.
3. The block sticks to the rod upon collision.
**Critical Question:**
During the collision between the block and the rod, which of the following physical quantities might not be conserved?
**Quantities to Evaluate:**
- **Kinetic Energy**
- **Linear Momentum**
- **Angular Momentum**
**Diagrams Explained:**
1. **Top View:**
- The compressed spring with the block constrained by the spring force.
- The rod positioned perpendicular to the table, capable of rotating through the collision.
2. **Side View (also front view):**
- The rod is pivoted vertically from a height \( H \) off the table, available for rotational dynamics.
**Analysis Framework:**
During the collision process:
- **Kinetic Energy**: Generally not conserved due to the inelastic nature of the collision (block sticks to the rod).
- **Linear Momentum**: May not be conserved due to external forces acting at the pivot.
- **Angular Momentum**: Typically conserved about the pivot point in the absence of external torques.
**Conclusion:**
Understanding the conservation laws and behavior of different dynamical variables in such experimentations is fundamental in introductory mechanics. This experiment serves as a practical example to explore these concepts in a controlled environment.
For pedagogical resources, further details on collision dynamics, energy transformations, and rotational motion can provide a deeper insight and understanding for students.
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