ScienceClass 9CBSE
Q
1. Two particles are placed at some distance. If the mass of each of the two particles is doubled, keeping the distance between them unchanged, the value of gravitational force between them will be (a) 1 4 times (b) 4 times (c) 1 2 times unchanged
A
<ul>
<li><strong>Soln:</strong></li>
</ul>
<p>Answer is (b) 4 times</p>
<p>Explanation:</p>
<p>F= Gx𝑚1𝑥𝑚2</p>
<p>𝑟2</p>
<p>F=Gx2𝑚1𝑥2𝑚2</p>
<p>𝑟2</p>
<p>F= 4xGx<sup>𝑚1𝑥𝑚2</sup></p>
<p>𝑟2</p>