Old Exam Papers Dec. 2010 - Video

lekUrj x nwjh ij f[kldk fn;k tk;s rks fl) dhft;s
fd P vkSj Q dk ifj.kkeh Px
P ? Q
nwjh ls gV tk;sxkA
(b) If three forces acting in one plane upon a rigid body,
keep it in equilibrium, prove that they must either
meet in a point or be parallel.
;fn fdlh fi.M ij fØ;k'khy rhu leryh; cy mls
lkE;koLFkk esa j[krs gksa rks fl) dhft;s fd os cy ;k rks
,d fcUnq ij feysaxs ;k lekUrj gksaxsA
2. (a) One end of a heavy uniform rod AB can slide along
a rough horizontal rod AC to which it is attached by
a ring; B and C are joined by a string. When the rod
is just on the point of slipping, the string is
perpendicular to the rod which makes an angle ?
with the vertical. Prove that the coefficient of friction
is given by :
tan ?
? ?
2
2 ? tan ?
,d Hkkjh ,oa ,dleku n.M AB dk fljk A, ,d #{k
{kSfrt n.M AC ij fQly ldrk gSA B vkSj C dks ,d
Mksjh }kjk ck¡/k fn;k tkrk gSA tc AB fQlyus dh
voLFkk esa gksrh gS rks Mksjh AB ij ledks.k cukrh gS vkSj
600 2 MT-09
Papers (A) (December) 2010
(367)
,d vk;rkdkj iVy dk mldh Hkqtk ds ifjr% tM+Ro
vk?kw.kZ Kkr dhft;sA
(b) Find the moment of inertia of a hollow sphere about
a diameter, its external and internal radii being
a and b.
fdlh [kks[kys xksys dk mlds O;kl ds lkis{k tM+Ro
vk?kw.kZ Kkr dhft;s] tgk¡ a rFkk b mldh cká o vUr%
f=T;k,¡ gSaA
MT-09 9 600