Why should the amplitude be small foe a simple pendulum experiment?
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Answer:
The Explanation describes why that is true for a simple pendulum.
Explanation:
You did not say what was oscillating. I will answer for the case where it is a simple pendulum that is oscillating. If it is a pendulum, amplitude must be small because the "time period does not depend on amplitude" rule applies to pendulums only if it is exhibiting simple harmonic motion.
Simple harmonic motion of a physical system requires that the force restoring the object (bob) to the equilibrium position must be proportional to the displacement from the equilibrium position.
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The simple pendulum is associated with the restoring force.
- We can say that the force acting on the body until it reaches its original position.
- The formula of simple pendulum is F=k·x.
- Where x is the displacement we can simplify the formula by writing as F=kxsinФ
- As the Ф will change it will made huge impact on the force acting on the body.
- As they are both directly proportional to each other.
- The angle displaced, that change the amplitude also.
- Therefore, simple pendulum will always have the small angle.
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