# GRE GR 1777, Problem 001 Solution

Physics GRE GR 1777

1. Classical Mechanics (Force)

Solution)

The force $F_{A}$ is
$F_{A} = m_{A} \cdot a_{A}$
Since $m_{B} = 2 m_{A}$ and $a_{B} = 2 a_{A}$,
$F_{B} = m_{B} \cdot a_{B} = (2 m_{A}) \cdot (2 a_{A}) = 4 m_{A} \cdot a_{A} = 4 F_{A}$.
Therefore, the answer is (E).