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NCERT class 9 science book chapter 10 example 10.6 |
Answer» <html><body><p>a 2450pa. <a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a> 612.5paExplanation:a ) p=F/Af=m×gf=5×9.8=49n (it is <a href="https://interviewquestions.tuteehub.com/tag/constant-930172" style="font-weight:bold;" target="_blank" title="Click to know more about CONSTANT">CONSTANT</a> because m and <a href="https://interviewquestions.tuteehub.com/tag/g-1003017" style="font-weight:bold;" target="_blank" title="Click to know more about G">G</a> are constanta)a=20cm×10cm= 200cm^2=0.02m^2b)a=40cm×20cm= 800cm^2=0.08m^2a)49n/0.02m^2=2450pab)49n/0.08m^2=612.5pa</p></body></html> | |