Two identical point masses of each are placed at vertices and of an equilateral…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Two identical point masses of

5\,\text{kg}

each are placed at vertices

A

and

B

of an equilateral triangle of side

0.20\,\text{m}

. Calculate the magnitude of the gravitational field intensity at the third vertex

C

. (Take

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

.) (a)

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

(b)

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

(c)

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

(d)

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