Two masses m₁ and m₂, (m₁ < m₂) are released from rest from a finite distance. They start

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7.Gravitation

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Two masses $m_1$ and $m_2\, (m_1 < m_2)$ are released from rest from a finite distance. They start under their mutual gravitational attraction

A

acceleration of $m_1$ is more than that of $m_2$

B

acceleration of $m_2$ is more than that of $m_1$

C

centre of mass of system will remain at rest in all the reference frame

D

total energy of system does not remain constant

(AIIMS-2012)

Solution

Same force acts on both masses

Hence $a \propto \frac{1}{{\,m}}$ $\left( {F = ma} \right)$

In absence of external force (remember mutual gravitational force is an internal force for the system) total energy remains constant.

Standard 11

Physics

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