Newton's Second Law (Translational Dynamics)

AP Physics 1· difficulty 2/5

The same 10 kg10~\text{kg} object is now lifted with upward acceleration of 2.0 m/s22.0~\text{m/s}^2. The new rope tension is

  • A

    120 N120~\text{N}

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  • B

    100 N100~\text{N}

  • C

    200 N200~\text{N}

  • D

    80 N80~\text{N}

Explanation

Tmg=maT=m(g+a)=10(12)=120 NT - m g = m a \Rightarrow T = m(g+a) = 10(12) = 120~\text{N}.

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