Answer to Question #296700 in Physics for Onin

Question

A 2.5 KG MASS AND A 4 KG MASS ARE ATTACHED TO A LIGHT

WEIGHT CORD THAT PASSES OVER A FRICTIONLESS PULLEY. THE

HANGING MASSES ARE LEFT FREE TO MOVE. FIND THE

Answer 1

Given:

$m_1=\rm 2.5\: kg$

$m_2=\rm 4\: kg$

The acceleration of system

$$a=g\frac{m_2-m_1}{m_2+m_1}=9.8*\frac{4.0-2.5}{4.0+2.5}=2.3\:\rm m/s^2$$