Physics

Problem

Three equal point masses of

2\,\text{kg}

are placed at the vertices of an equilateral triangle of side

0.30\,\text{m}

. What is the magnitude of the gravitational field at the centre of the triangle? a)

1.3\times10^{-8}\,\text{N kg}^{-1}

7.7\times10^{-9}\,\text{N kg}^{-1}

0\,\text{N kg}^{-1}

4.5\times10^{-9}\,\text{N kg}^{-1}