Published by:
CGP EDU Academic Team
Published on: September 11, 2026
A simple pendulum oscillates in air with time period T and amplitude A. As the time passes
Text Solution
Verified by ExpertsThe correct answer is:
C
Step 1: Understand the effects of damping on a simple pendulum.
A simple pendulum oscillating in air experiences air resistance which acts as a damping force.
Step 2: Analyze the amplitude (A) and time period (T) of the pendulum over time. The presence of air resistance causes the amplitude of oscillation to decrease over time, meaning A diminishes.
Step 3: Consider the time period (T). For a damped oscillation, the effective time period can increase because the restoring force becomes weaker as the pendulum loses energy, making it take longer to complete each oscillation.
Therefore, as time passes, while A decreases, T tends to increase.
Conclusion: Thus, the correct option is C: T increases and A decreases.
A simple pendulum oscillating in air experiences air resistance which acts as a damping force.
Step 2: Analyze the amplitude (A) and time period (T) of the pendulum over time. The presence of air resistance causes the amplitude of oscillation to decrease over time, meaning A diminishes.
Step 3: Consider the time period (T). For a damped oscillation, the effective time period can increase because the restoring force becomes weaker as the pendulum loses energy, making it take longer to complete each oscillation.
Therefore, as time passes, while A decreases, T tends to increase.
Conclusion: Thus, the correct option is C: T increases and A decreases.
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