Spring Forces

AP Physics 1· difficulty 2/5

Two identical spring scales (each ideal) are connected end-to-end and a 10 kg10~\text{kg} mass is hung from the bottom. Using g10 m/s2g \approx 10~\text{m/s}^2, each scale reads

  • A

    200 N200~\text{N}

  • B

    Different values for each

  • C

    100 N100~\text{N}

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  • D

    50 N50~\text{N}

Explanation

Both scales are in series with the load and have the same tension everywhere along the rope: each reads W=100 NW = 100~\text{N}.

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