ICSE BoardEnglish MediumSTD 9PHYSICSLaws of Motion3 Marks
Question
Differentiate between gravitational mass and inertial mass.
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Answer
Inertial mass is a measure of inertia of the object. According to the second law of motion $F = m \times a$
m= F/a and this mass is called inertial mass.
Newton law of gravitation gives another definition of mass.
$F = (G m_1m_2)/R^2$
Thus $m_2$ is the mass of the body by which another body of mass $m_1$ attracts it towards it by the law of gravitation.
This mass is called gravitational mass.
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