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4-1.Newton's Laws of Motion
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આપેલ તંત્ર માટે $B$ બ્લોકનો પ્રવેગ કેટલો થાય?

A
$\frac{{{m_2}g}}{{(4{m_1} + {m_2})}}$
B
$\frac{{2{m_2}g}}{{(4{m_1} + {m_2})}}$
C
$\frac{{2{m_1}g}}{{({m_1} + 4{m_2})}}$
D
$\frac{{2{m_1}g}}{{({m_1} + {m_2})}}$
Solution

$T = {m_1}2a$ ……..(i)
${m_2}g – 2T = {m_2}a$……..(ii)
$a = \frac{{{M_2}g}}{{\left( {4{m_1} + {m_2}} \right)}}$
Standard 11
Physics