lathurshan science (தமிழ்) gr7

kl;/thior;Nrid ,e;Jf;fy;Y}up

Mf;fk;

Nf. yJu;~d;.juk; : 7H

myF :06. rf;jp Ntiy kw;Wk; tpiria tpidj;jpwDld; gad;gLj;Jjy;.

ghlk; :tpQ;Qhdk;

6.1 tpiria gaDWjp kpf;f tifapy; gad;gLj;Jjy;.

tpir vd;gJ js;SjYk; ,Oj;jYk; MFk;.tpiria gad;gLj;Jk; re;ju;g;gq;fs;.• fjit jpwj;jy; / %Ljy;.• fl;biy mirj;jy;.• thfdj;ij ghij Xuj;jpy; epWj;Jjy;.• [d;diy jpwj;jy; / %Ljy;.• nghUnshd;iw mirj;jy;.• fjpiuia NkirapDs;Ns js;Sjy; ,Sj;jy;.

K. Lathurshan Grade 7

tpiria msf;Fk; myF.

tpiria msg;gjw;fhd ru;tNjr myF epåw;wd; MFk;.

,J N vDk; Mq;fpy vOj;jhy; Fwpf;fg;gLk;.

tpiria mstplg; gad;gLk; juhR epåw;wd; juhR vdg;gLk;.

,j;juhR RUs;tpy;ypdhy; Mf;fg;gl;Ls;sJ.


tpiria gpuNahfpf;Fk;NghJ ftdj;jpw; nfhs;sNtz;ba fhuzpfs;.

tpirapd; gUkd;nghUs; xd;W ,aq;Ftjw;F NghjpasT gUkd;

cs;s tpir Njit. NghjpasT tpir ,y;yhjNghJ ,af;fk; Vw;glhJ

mjhtJ mq;F Ntiy nra;ag;gltpy;iy. Nkir kPjpUf;Fk; 60kg jpzpTs;s

nghUspd; ,af;fk; gw;wpr; rpe;jpj;Jg;ghUq;fs;.


tpirapd; jpirntt;NtW jpirfspy; vk;khy; tpiria gpuNahfpf;f

KbAk;. MapDk; ,af;fk; eilngWk; jpirapy; tpiria

gpuNahfpj;jhy; kpfg; gaDs;sjhFk;. xU nghUs; kPJ ntt;NtW jpirfspy; tpiria

gpuNahfpj;J Vw;gLk; tpisTfis mwpe;J nfhs;Nthk;.

njd;fpof;F


tpirapd; gpuNahfg;Gs;sptpirf;F mJ njhspw;gLk; gpuNahfg;Gs;sp cs;sJ.xU nghspd; kPJ xNuasthd tpiria ntt;NtW

gpuNahfg;Gs;spfspy; gpuNahfpj;J Ma;T nra;Nthk;.

A,B,C vDk; Gs;spfspy; 100N tpiria gpuNahfpj;J eilngWtij mtjhdpg;Nghk;.


gytpj tpirfSk; mtw;wpd; gpuNahfq;fSk;fw;wypd; nghUl;L nghUl;fSf;fpilapy;

cUthFk; tpirfis ,U njhFjpfshfg; gpupf;fyhk;.

mit njhLif tpir, njhLifapy; [njhiyT] tpir vd;gdthFk;.


njhLif tpir

,uz;L nghUl;fs; ngsjPf epiyapy; xd;Nwhnlhd;W njhLifapYs;sNghJ xd;wpypUe;J xd;iw tpyf;f Kaw;rf;Fk; tpirfs; njhLif tpirfs;[Contact force] vdg;gLk;.

,tw;Wf;F cjhuzq;fshf fzj;jhf;F tpir, cuha;T tpir, ,O tpir, mKf;f tpir, [cijg;G] Mfpatw;iw $wyhk;.


fzj;jhf;F tpir

xU nghUs; kPJ ,d;ndhU nghUspdhy; kpff;Fwfpa Neuj;jpy; gpuNahfpf;Fk; tpir fzj;jhf;F tpirahFk;

fzj;jhf;F tpirapdhy; vkf;F gaDk; cs;sJ jPq;Fk; cs;sJ.


fzj;jhf;F tpir gad;gLk; re;ju;g;ge;fs;re;ju;g;gq;fs;

gad;gLj;jpa fzj;jhf;F tpir

gad;ghL

fUq;fy; ciljy; Rj;jpayhy; fy;iy ciljy; fy; cile;J Nghjy;

kz;iz mOj;Jjy;

Gtp kPJ mjpu;it Vw;gLj;Jjy;

kz; gilahjy;


cuha;T tpir Vw;gLk; re;ju;g;ge;fs;re;ju;g;gq;fs; cuha;T

mjpfupj;jy;/Fiwjy;

ghijfspy; nry;Yk; thfdq;fs;

rpy;ypdJk; ghijapdJk; cuha;T mjpfupf;fg;gl Ntz;Lk;

nghwp xd;wpd; gFjpfs; rPuhf ,aq;Ftjw;F

gFjpfSf;fpilNa cuha;T Fiwf;fg;gl Ntz;Lk;


Nkw;gug;gpYs;s nghUs;kPJ mk;Nkw;gug;Gf;F rkhe;jukhf tpir xd;WgpuNahfpf;fg;gLk; NghJ Nkw;gug;ghdJ vjpu;j;jpirapy; tpir xd;iw cUthf;Ffpd;wJ. ,e;j vjpu;tpir cuha;T tpir vdg;gLk;.

nghUs; xd;iw mirf;f Ntz;Lnkdpy; gpuNahfpj;j tpirahdJ cuha;T tpirapYk; $bajhf ,Uf;f Ntz;Lk;.

,af;fnghd;iw Muk;gpg;gjd; nghUl;L gpuNahfpf;fg;gLk; tpir,cuha;T tpirf;Fr; rkkhdjhfTk; vjpuhdjhfTk; ,Uf;f Ntz;Lk;.


gytpj re;ju;g;gq;fspy; cuha;T tpiria mjpfupj;jy; Fiwj;jy; Mfpatw;wpd; mtrpaj;ij mwpe;J nfhz;Bu;fs;.

cuha;T tpiria mjpfupf;Fk; nghUl;L my;yJ Fiwf;Fk; tifapy; gy rhjdq;fs; mike;Js;sd.

cuha;it Fiwf;Fk; tifapy; fuk; gyifapy; gTlu; ,Ljy; Fz;Lg; nghjpfis ,Ljy; fpwP]; ghtpj;jy; cuha;T ePf;fp vz;izahy; Nkw;gug;ig xg;gkhf;Fjy; Nghd;w nraw;ghLfs; mike;Js;sd.


cuha;T tpiria Fiwg;gitAk; $l;LgitAk;

$l;Lgit

Fiwg;git


,Oit tpirxU ,wg;gu; gl;bia my;yJ ,ioia my;yJ

Nfhiy ehk; ,Of;Fk; NghJ mt;tpirf;F vjpuhf Xu; vjpu; tpir cUthf;fg;Lfpd;wJ.

cUthf;fg;gl;l ,t;tpirapdhy; ,g;nghUl;fs; kPz;Lk; gioa epiyf;Fr; nry;y KaYk; ,t;thW ,ioapy; my;yJ ,wg;gu; gl;bapy; my;yJ Rusp tpy;ypy; cuthf;fg;gl;l vjpu; tpir ,Oit [Tension] tpir vdg;gLk;.


cijg;GxU nghUs; kPJ ,d;ndhU nghUs;

tpiria gpuNghfpf;Fk; NghJ ,uz;lhtJ nghUspdhy; KjyhtJ nghUs; kPJ vjpu;j;jpirapy; tpir xd;W nraw;gLk;. ,t;tpir cijg;G tpir vdg;gLk;.


ed;wp


lathurshan science (தமிழ்) gr7

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