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An air-tight cage with a parrot sitting in it is suspended from the spring balance. The parrot starts flying. The reading of the spring balance will
- a)Increase
- b)Decrease
- c)Not change
- d)Be zero
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
An air-tight cage with a parrot sitting in it is suspended from the s...
Explanation:
When a parrot inside an airtight cage starts flying, the reading of the spring balance will not change. This is because the spring balance measures the weight of an object, which is the force exerted by gravity on the object. The force exerted by the parrot on the cage and the force exerted by the cage on the parrot are equal in magnitude but opposite in direction, according to Newton's third law of motion.
Newton's Third Law of Motion:
- For every action, there is an equal and opposite reaction.
Key Points:
- The spring balance measures the weight of an object.
- When the parrot starts flying inside the cage, it exerts an upward force on the cage.
- The cage exerts an equal and opposite downward force on the parrot.
- These forces cancel each other out, resulting in no change in the reading of the spring balance.
- The parrot's weight is still acting downwards, and the cage exerts an equal and opposite force on the parrot due to its weight.
- Therefore, the reading of the spring balance remains unchanged.
Conclusion:
The reading of the spring balance will not change when the parrot inside the airtight cage starts flying. The forces exerted by the parrot and the cage on each other cancel out, resulting in no change in the weight measured by the spring balance.
When a parrot inside an airtight cage starts flying, the reading of the spring balance will not change. This is because the spring balance measures the weight of an object, which is the force exerted by gravity on the object. The force exerted by the parrot on the cage and the force exerted by the cage on the parrot are equal in magnitude but opposite in direction, according to Newton's third law of motion.
Newton's Third Law of Motion:
- For every action, there is an equal and opposite reaction.
Key Points:
- The spring balance measures the weight of an object.
- When the parrot starts flying inside the cage, it exerts an upward force on the cage.
- The cage exerts an equal and opposite downward force on the parrot.
- These forces cancel each other out, resulting in no change in the reading of the spring balance.
- The parrot's weight is still acting downwards, and the cage exerts an equal and opposite force on the parrot due to its weight.
- Therefore, the reading of the spring balance remains unchanged.
Conclusion:
The reading of the spring balance will not change when the parrot inside the airtight cage starts flying. The forces exerted by the parrot and the cage on each other cancel out, resulting in no change in the weight measured by the spring balance.
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Community Answer
An air-tight cage with a parrot sitting in it is suspended from the s...
The system is closed. The weight of the parrot suppresses the base of the air cage with a weight equal to the weight of the parrot. These are internal forces. So there will be no change in the reading of the spring balance.
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An air-tight cage with a parrot sitting in it is suspended from the spring balance. The parrot starts flying. The reading of the spring balance willa)Increaseb)Decreasec)Not changed)Be zeroCorrect answer is option 'C'. Can you explain this answer?
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