A pendulum is moving 2.0 m/s at the bottom of its swing. How high vertically will it go before it begins to swing back? Group of answer choi

Question

A pendulum is moving 2.0 m/s at the bottom of its swing. How high vertically will it go before it begins to swing back? Group of answer choices 0.4 m 0.1 m 0.2 m 0.8 m 1.0 m

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Ngọc Hoa 4 years 2021-07-20T10:13:59+00:00 1 Answers 17 views 0

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  1. kimchi2
    0
    2021-07-20T10:15:11+00:00
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    Answer:

    h = 0.2 m

    Explanation:

    Given that,

    A pendulum is moving 2.0 m/s at the bottom of its swing.

    We need to find the height high it swing back. Let the height is h.

    Using the conservation of energy such that,

    \dfrac{1}{2}mv^2=mgh\\\\h=\dfrac{v^2}{2g}

    Put all the values,

    h=\dfrac{(2)^2}{2\times 10}\\\\h=0.2\ m

    So, it will reach to a height of 0.2 m.

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