To analyze the action/reaction force pairs in the scenario you presented, we need to consider Newton's Third Law, which states that for every action, there is an equal and opposite reaction.
Here are the key forces at play in this scenario:
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The weight of the fish (10N downward) acts on the water. The water exerts an equal and opposite force upward on the fish, which is the buoyant force (10N upward).
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The weight of the water (40N downward) acts on the aquarium. The aquarium exerts an equal and opposite force upward on the water, which is the buoyant force (40N upward).
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The weight of the aquarium (20N downward) acts on the table. The table exerts an equal and opposite force upward on the aquarium, which is the support force (20N upward).
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The weight of the table (50N downward) acts on the ground. The ground exerts an equal and opposite force upward on the table, which is the normal force (50N upward).
These forces represent the following action/reaction pairs:
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Fish to water:
- Action: Fish weight on water (10N downward)
- Reaction: Buoyant force from water on fish (10N upward)
- Pair: C (+10N) and D (-10N)
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Water to aquarium:
- Action: Water weight on aquarium (40N downward)
- Reaction: Buoyant force from aquarium on water (40N upward)
- Pair (not specified in options): Could be +40N and -40N
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Aquarium to table:
- Action: Aquarium weight on table (20N downward)
- Reaction: Support force from table on aquarium (20N upward)
- Pair (not specified): Could be +20N and -20N
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Table to ground:
- Action: Table weight on ground (50N downward)
- Reaction: Normal force from ground on table (50N upward)
- Pair: +50N and -50N (also not specified)
Given the options:
We can assign the forces:
- Action: Downward force of the fish (D: -10N)
- Reaction: Upward force from the water on the fish (C: +10N)
Since the other forces aren't part of your options list, we adhere to what you asked for.
Thus the assignment in the provided image would look like:
- Fish → Water:
- C. +10N (Buoyant force on fish)
- D. -10N (Weight of the fish)
If you had further specific images to analyze, feel free to add! But based solely on Newton's Third Law and what's presented, this is the correct pairing.
1 answer