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Laws of Motion — PHYSICS STD 9 — Question

ICSE BoardEnglish MediumSTD 9PHYSICSLaws of Motion2 Marks
Question
How will the force of gravitation between two objects change if the distance between them is:
Halved
✓

Answer

We know that law of gravitation.
$F = G ( m_1 X m_2)/R^2.$
If distance between them is halved then put $R = R/2.$
$F = 4 X G( m_1 X m_2)/ R^2.$
$F_1 = 4 F$

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