If a 5 meter long metal bar has 40 kg mass then what is the mass of a metal bar 3 meters long

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If a 5 meter long metal bar has 40 kg mass then what is the mass of a metal bar 3 meters long

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Cherry 3 years 2021-07-18T22:28:56+00:00 1 Answers 17 views 0

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  1. dangkhoa
    0
    2021-07-18T22:30:04+00:00
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    24 kg

    Step-by-step explanation:

    You start by calculating the linear mass density of the rod:

    d = m/L = (40 kg)/(5 m) = 8 kg/m

    So for a 3-m long bar, the mass can be calculated as follows:

    m = d×L = (8 kg/m)(3 m) = 24 kg

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