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Frequency and Period of SHM

AP Physics 1· difficulty 2/5

A spring-mass oscillator has k=50 N/mk = 50~\text{N/m} and m=0.20 kgm = 0.20~\text{kg}. Its angular frequency is

  • A

    25 rad/s25~\text{rad/s}

  • B

    0.20 rad/s0.20~\text{rad/s}

  • C

    5 rad/s5~\text{rad/s}

  • D

    15.8 rad/s15.8~\text{rad/s}

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Explanation

ω=k/m=50/0.20=250≈15.8 rad/s\omega = \sqrt{k/m} = \sqrt{50/0.20} = \sqrt{250} \approx 15.8~\text{rad/s}.

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