Physics

Problem

Two small spheres attract each other with a force of

0.60\,\text{N}

when their centres are

30\,\text{cm}

apart. Keeping their masses unchanged, at what separation will the force be

0.15\,\text{N}

? a)

45\,\text{cm}

120\,\text{cm}

60\,\text{cm}

15\,\text{cm}