Rank the magnitudes of the net forces on systems A, B, and C.

System A Less than System B Equal to System C

Question

Rank the magnitudes of the net forces on systems A, B, and C.

System A Less than System B Equal to System C

BlackTom AI · Accepted Answer

To start, I’ll restate what the prompt is asking and what the provided selections imply.
- The task is to rank the magnitudes of the net forces on systems A, B, and C.
- The given selections to fill are: System A ____ Less than System B; and System A ____ Equal to System C.

Now I’ll analyze each part and discuss how one would reason about the comparisons.

Part 1: Comparing System A to System B (A ____ Less than System B)
- If the correct fill is 'Less than,' this would mean the net force on A is smaller in magnitude than the net force on B (|F_A| < |F_B|).
- In Newtonian terms, the net force on a system is F = m a. A smaller |F| could arise from a smaller mass, a smaller acceleration, or both, for A relative to B.
- Potential scenarios supporting |F_A| < |F_B|: A has a smaller mass than B while experiencing a similar acceleration, or A has a similar mass but a smaller acceleration, or A’s forces cancel more due to symmetry, reducing net result.
- Potential pitfalls: If masses and accelerations are unknown, you cannot definitively claim |F_A| < |F_B|. Any conclusion should be based on given data about masses, accelerations, or external forces.

Part 2: Comparing System A to System C (A ____ Equal to System C)
- If the correct fill is 'Equal to,' this would mean the net forces on A and C have the same magnitude, |F_A| = |F_C|.
- This equality can occur if A and C have equal products m a, or if the net external forces and/or accelerations result in the same net effect on both systems, regardless of their individual masses or accelerations.
- Scenarios supporting |F_A| = |F_C|: both systems experience the same net force due to identical masses and accelerations, or different masses and accelerations that multiply to the same value, or symmetric conditions where external forces cancel to yield the same net result.
- Potential pitfalls: Without concrete numbers or relationships between mass and acceleration for A and C, assuming equality could be misleading. Equality often requires a specific balance or symmetry in the system setup.

Synthesis and considerations about missing information
- Because the question as shown provides no numerical values or descriptive relations for masses, accelerations, or force balance for A, B, and C, a definitive ranking among all three (A vs B vs C) cannot be uniquely determined from first principles alone.
- The paired fills 'Less than' for A vs B and 'Equal to' for A vs C represent one possible ranking pattern: |F_A| < |F_B| and |F_A| = |F_C|, which would imply |F_B| > |F_A| = |F_C|, i.e., B has the largest net force, while A and C have equal smaller net forces.
- If the problem intends a different ranking among the three systems, or if more information is available (masses, accelerations, or external forces), the conclusions could change accordingly.

Summary of the reasoning for the given selections
- The 'Less than' fill for A vs B suggests |F_A| < |F_B| based on a smaller force or larger opposing effect on B.
- The 'Equal to' fill for A vs C suggests |F_A| = |F_C|, indicating A and C experience the same net force magnitude under the given conditions.
- Without additional data, these are plausible interpretations but not guaranteed; the actual ranking would require explicit values or relationships among m and a for each system.

PHYS 114 B Tutorial Practice 3 - Tension

Rank the magnitudes of the net forces on systems A, B, and C. System A Less than System B Equal to System C

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