Question

Two masses $m_1$ and $m_2$ are connected by a massless string over a fixed pulley. If $m_1>m_2$ , $m_1$ will move downward and $m_2$ will move upward. What is the acceleration with which the combination o f two masses will move?
( $g=$ acceleration due to gravity)

• A. $0$
• B. $g$
• C. $[(m_1-m_2)/(m_1+m_2)]\times g$
• D. $[2m_1{m}_2/(m_1+m_2)]\times g$

Answer 1

Answer: (C)

$a=\frac{\left(m_1-m_2\right)\times g}{\left(m_1+m_2\right)}$