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Question
পৃথিবীর ব্যাসার্ধ 6400 km পৃথিবীর পৃষ্ঠ হতে 6400 km উচ্চতায় g = ?
4.9
m
s
-
2
2.45
m
s
-
2
0
m
s
-
2
9.8
m
s
-
2
ANSWER : 2
Descrption
<p style="margin-left:0px;">পৃথিবীর পৃষ্ঠে অভিকর্ষজ ত্বরণ,</p><p>g = GM/r^2 </p><p style="margin-left:0px;">যেখানে,</p><ul><li>G হল মহাকর্ষ ধ্রুবক (6.674 × 10^-11 m^3 kg^-1 s^-2)</li><li>M হল পৃথিবীর ভর (5.972 × 10^24 kg)</li><li>r হল পৃথিবীর কেন্দ্র থেকে বস্তুর দূরত্ব</li></ul><p style="margin-left:0px;">পৃথিবীর পৃষ্ঠ থেকে 6400 km উচ্চতায় অভিকর্ষজ ত্বরণ,</p><p>g' = GM/(r+R)^2 </p><p>g' = 6.674 × 10^-11 m^3 kg^-1 s^-2 * 5.972 × 10^24 kg / (6400 km + 6400 km)^2 </p><p>g' = 2.45 m s <sup>-2</sup> </p><p style="margin-left:0px;">অতএব, উত্তর **2.45 ms<sup>-2</sup></p>
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