A mass is fixed at

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics

Problem

3\,\text{kg}

mass is fixed at

x=0

. A second point mass

m

is placed at

x=0.80\,\text{m}

. If the center of mass of the two-mass system lies at

x=0.20\,\text{m}

, what is the value of

m

? (a)

0.75\,\text{kg}

(b)

1.8\,\text{kg}

(c)

1.0\,\text{kg}

(d)

0.50\,\text{kg}