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4-1.Newton's Laws of Motion
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જો $ m_1 = 4m_2$ છે . $m_1 $ નો પ્રવેગ $a$ છે. તો દોરીમાં તણાવ $T =$ ____
A
$m_2g$
B
$\frac{{{m_2}g}}{2}$
C
$\frac{2}{3}{m_2}g$
D
$\frac{3}{2}{m_2}g$
Solution
${m_1}a = {m_1}g – 2T$ …..(i)
${m_2}\left( {2a} \right) = T – {m_2}g$…..(ii)
$a = g/4$
$T = \frac{3}{2}\,{m_2}g$
Standard 11
Physics
