Flag IIT JEE Entrance Exam> velocityofheaviestfragmentvelocity-of-heaviest-fragment
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v:* behavior:urlurl#default#VMLVML;o:* behavior:urlurl#default#VMLVML;w:* behavior:urlurl#default#VMLVML;.shape behavior:urlurl#default#VMLVML;Normal 0false0false false falseENUSfalseEN-US XNONEX-NONE XNONE/X-NONE/* Style Definitions /table*/table.MsoNormalTablemsostylenamemso-style-name:"Table Normal";msotstylerowbandsizemso-tstyle-rowband-size:00;msotstylecolbandsizemso-tstyle-colband-size:00;msostylenoshowmso-style-noshow:yes;msostyleprioritymso-style-priority:9999;msostyleparentmso-style-parent:"";msopaddingaltmso-padding-alt:0in0in 55.4pt4pt 0in0in 55.4pt4pt;msoparamargintopmso-para-margin-top:0in0in;msoparamarginrightmso-para-margin-right:0in0in;msoparamarginbottommso-para-margin-bottom:1010.0pt0pt;msoparamarginleftmso-para-margin-left:0in0in;lineheightline-height:115115%;msopaginationmso-pagination:widoworphanwidow-orphan;fontsizefont-size:1111.0pt0pt;fontfamilyfont-family:"Calibri","sansserifsans-serif";msoasciifontfamilymso-ascii-font-family:Calibri;msoasciithemefontmso-ascii-theme-font:minorlatinminor-latin;msohansifontfamilymso-hansi-font-family:Calibri;msohansithemefontmso-hansi-theme-font:minorlatinminor-latin;msobidifontfamilymso-bidi-font-family:"Times New Roman";msobidithemefontmso-bidi-theme-font:minorbidiminor-bidi;A body of mass 55 kg explodes at rest into three fragments with masses in the ratio 11: 11: 33. The fragments with equal masses fly in mutually perpendicular directions with speeds of 2121 m/sm/s. The velocity of heaviest fragment in m/sm/s will beabea 77 sqrt2bsqrt2b 55 sqrt2csqrt2c 33 sqrt2dsqrt2d sqrt2sqrt2

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Simran Bhatia , 11 Years ago
Grade 11
anser 1 Answer
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Hrishant Goswami

Last Activity: 11 Years ago

a

rn

Masses of the pieces are 1, 1,3 kg. Hence

rn

1 × 212 + 1 × 212 = 3 × V2

rn

That is, V = 7sqrt2

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