Two blocks of masses and are in contact and move together on a horizontal surface…

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

Problem

Two blocks of masses

m_1

and

m_2

are in contact and move together on a horizontal surface that is essentially frictionless. A constant horizontal force

F

is applied to the system. Which of the following gives the magnitude of the acceleration of the blocks’ common center of mass? (a)

a=\dfrac{F}{m_1}

(b)

a=\dfrac{F}{m_1+m_2}

(c)

a=\dfrac{2F}{m_1+m_2}

(d)

a=\dfrac{F}{m_1+\dfrac{m_2}{2}}