Question

what must be the distance between a 5.2kg object and a 2.4kg object for their gravitational attraction to have a magnitude of 2.3×10^-12​

Answer 1

Answer:

19.024 m

Explanation:

$m_1=5.2 \, \text{kg}$

$m_2 = 2.4 \, \text{kg}$

$G = 6.67\times10^{-11} \, N m^2kg^{-2}$

$F=2.3\times10^{-12}$

By Newton's Law of Gravitation,

$F=G\dfrac{m_1m_2}{r^2}$

$r^2=6.67\times10^{-11}\times\dfrac{5.2\times2.4}{2.3\times10^{-12}}$

$r^2=361.92$

$\therefore r=19.024 \, m$

Answer 2

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