Question

1 m bot (A) 13. The vertices of a quadrilateral are at A(1, 2, -1), B(-4, 2, -2), C(4, 1, -5) and D(2, -1, 3). Forces magnitudes 2 N, 3 N, 2 N are acting at point A along the lines AB, AC, AD of the quadrilaten respectively. Their resultant is (in N) i-9+6k Bi-9j - 6Â î+9-166 î +9+6k 26 126 126 LB-R (C) (D) 25. If (A V26

JEE/Engineering Exams

Physics

Solution

135

4.0 (1 ratings)

set ( 10+1 ) for ( c e=2 overrightarrow{A B}+3 overrightarrow{A C}+2 overrightarrow{A D} ) ( -2left[frac{5 i-k}{sqrt{20}}right]+frac{3[3 i j-4 bar{k}]}{sqrt{20}}+frac{2[i-3 j+q i)}{sqrt{26}} ) ( =frac{hat{i}-q hat{j}-6 hat{k}}{sqrt{2 theta}} )