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JEEMAIN and NEET
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JEEMAIN PAST PAPERS
>>
2006
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Q)
ABC is triangle, right angled at A. The resultant of the force acting along
→
A
B
,
→
A
C
with magnitudes
1
A
B
and
1
A
C
respectively is the force along
→
A
D
, where
D
is the foot of the perpendicular from
A
onto
B
C
. The magnitude of the resultant is :
( A )
(
A
B
)
(
A
C
)
A
B
+
A
C
( B )
1
A
D
( C )
1
A
B
+
1
A
C
( D )
A
B
2
+
A
C
2
(
A
B
)
2
(
A
C
)
2
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