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0.3 किग्रा का एक पिण्ड छत से एक हल्की डोरी द्वारा लटकाया गया है। `0.7` किग्रा का दूसरा पिण्ड, प्रथम पिण्ड से दूसरी हल्की डोरी द्वारा लटकाया गया है। दोनों डोरियों में तनाव बलों का परिकलन कीजिए (g =10 मी/से`""^(2)` )

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`0.7`किग्रा के पिण्ड के लिए, `" " T_2-m_1g=0।7xx10=7` न्यूटन। `0।3` किग्रा के पिण्ड के लिए, ` T_2-T_1=m_2g`
` T_2=T_1 +m_2g =7+0।3xx10` = 10 न्यूटन।
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