Rotational Equilibrium and Newton's First Law in Rotational Form

AP Physics 1· difficulty 3/5

For the previous setup, scale <strong>A</strong> reads

  • A

    125 N125~\text{N}

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  • B

    50 N50~\text{N}

  • C

    175 N175~\text{N}

  • D

    100 N100~\text{N}

Explanation

Total weight: 300 N300~\text{N}. FA=300175=125 NF_A = 300 - 175 = 125~\text{N}.

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