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1 January, 09:17

Two students standing apart in a classroom have a gravitational force of attraction between them of 3.20 x 10-8 N. If one student has a mass of 50.0 kg and the other has a mass of 60.0 kg, what is the distance between the students?

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  1. 1 January, 09:21
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    Using:

    F = GMm/r²

    r = √ (GMm/F)

    F = 3.2*10⁻⁸ N, M = 60 kg, m = 50 kg, G = 6.673*10⁻¹¹ Nm²kg⁻²

    r = √ (GMm/F)

    r = √ (6.673*10⁻¹¹*60*50 / 3.2*10⁻⁸) Use a calculator.

    r ≈ 2.5011 m

    The distance between the students is ≈ 2.5 m.
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