Two point masses are fixed in the -plane: at the origin and at

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

Problem

Two point masses are fixed in the

xy

-plane:

4\,\text{kg}

at the origin

O(0,0)

and

9\,\text{kg}

A(3\,\text{m},0)

. Find the magnitude of the net gravitational field intensity at point

P(0,4\,\text{m})

. (Use

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

.) (a)

5.4\times10^{-11}\,\text{N/kg}

(b)

4.1\times10^{-11}\,\text{N/kg}

(c)

3.9\times10^{-11}\,\text{N/kg}

(d)

1.5\times10^{-11}\,\text{N/kg}