Spring and mathematical pendulums
Answers are for parents and teachers.
1
Spring pendulum: k = 25 N/m, m = 1 kg. Angular frequency ω (rad/s)?
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2
A pendulum has a period of 2 s. If its length is reduced 4 times, what is the new period (s)?
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3
k = 50 N/m, A = 0.2 m. What is the greatest potential energy (J)? (kA²/2)
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4
The first pendulum has period 6 s, the second 3 s. What is the ratio of lengths l₁/l₂?
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5
Why does a pendulum clock keep regular time?
For small oscillations the period does not depend on the amplitude, only on the length.