Physics

Problem

Identical

2.0\,\text{kg}

spheres are fixed at

x=0\,\text{m}

and

x=4.0\,\text{m}

. One sphere is replaced by another of unknown mass

M

at the same position (

x=4.0\,\text{m}

). Determine the value of

M

required so that the system’s center of mass remains at

x=2.0\,\text{m}