Three point masses are placed on a straight line: at

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

Three point masses are placed on a straight line:

2\,\text{kg}

x=0

3\,\text{kg}

x=0.50\,\text{m}

, and

4\,\text{kg}

x=1.00\,\text{m}

. Neglect all other forces. Using

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

, the net gravitational force on the

3\,\text{kg}

mass is (a)

3.2\times10^{-9}\,\text{N}

towards the

4\,\text{kg}

mass (b)

1.6\times10^{-9}\,\text{N}

towards the

4\,\text{kg}

mass (c)

1.6\times10^{-9}\,\text{N}

towards the

2\,\text{kg}

mass (d)

8.0\times10^{-10}\,\text{N}

towards the

4\,\text{kg}

mass