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Let  magnitude of three vectors a=2; b=3 ; c=6. Angle between any two vector is 120 degree and the vector are coplaner ,find magnitude of resultant vector
Asked by tusharbailwal8 | 22 Apr, 2019, 07:26: AM
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l e t space u s space a s s u m e space v e c t o r space a space i s space a l o n g space plus v e space x space a x i s space t h i s space v e c t o r space c a n space b e space g i v e n space a s space a space equals space 2 i s o space t h e space v e c t o r space b space w i l l space l i e space i n space 2 n d space q u a d r a n t space w i t h space m a k i n g space a n space a n g l e space o f space 30 space d e g r e e space w i t h space plus v e space y space a x i s t h i s space v e c t o r space c a n space b e space g i v e n space space a s space b space equals space minus 3 sin 30 space i space plus space 3 cos 30 space j space equals space minus 1.5 space i space plus space 1.5 square root of 3 j a n d space v e c t o r space c space w i l l space l i e space i n space 3 r d space q u a d r a n space w i t h space m a k i n g space a n space a n g l e space o f space 30 space d e g r e e space w i t h space minus v e space d i r e c t i o n space o f space y space a x i s t h i s space v e c t o r space c a n space b e space g i v e n space a s space c space equals space minus 6 sin 30 space i minus 6 cos 30 space space equals space minus 3 space i space space minus space 3 square root of 3 space j n e t space r e s u l tan t space v e c t i r space R space equals space a plus b plus c space equals space 2 i space minus space 1.5 i space plus 1.5 square root of 3 j space minus 3 i minus 3 square root of 3 j R space equals space minus 2.5 space i space minus 1.5 square root of 3 j s o space v a l u e space o f space r e s u l tan t space R space equals space square root of left parenthesis 2.5 right parenthesis squared space plus left parenthesis 1.5 square root of 3 right parenthesis squared space end root space equals space square root of 13 space
Answered by Ankit K | 22 Apr, 2019, 11:48: AM
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JEE main - Physics
10meast 12m north 4m south 4m West find the displacement
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A stationary man observes that the rain strikes him at an angle of 60∘ to the horizontal. When he begins to move with the velocity of 25m/s then the drops appear to strike him at an angle 30∘ from horizontal. The velocity of the rain drops is : (Explain with diagram)
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JEE main - Physics
if vector P +vector Q = vector R and vector P vector - vector Q = vector S , then R²+S² is equal to
Asked by mrudhulaprakashmanda844 | 13 Jul, 2022, 08:39: PM
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JEE main - Physics
find the vector which is perpendicular to both A and B but have magnitude equal to that of B A=3i^-2j^,b=4i^+3j^-k^
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boy a is standing at a point 3 m west and 4 m south to boy b. assume the east and the north towards the positive x and y axis of coordinate system. boy a starts moving along a vector a =1.5 i +2 j with a constant speed of 2m/s for 5 seconds and stops. now how far is the boy a from the boy b
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Consider three vectors vector A, vector B, vector C. It is given that vector A and vector B lie in the x-y plane and the direction of vector C is along (+k^). Also, it is known that |vector A|=10 and |vector B|=6 units and the three vectors are related by the relation vector A=vector B - alpha(vector B X vector C), where alpha is some postive constant. Now, if only the magnitude of vector C is doubled, then what should the magnitude of vector B be, for which vector A remains unchanged (both in magnitude and direction)?
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Consider 4 forces: vector A: 3N, 26° East of North vector B: 5N, 11° West of North vector C: 5/√2 N, 34° West of South vector D: 4N, 64° East of South Then the magnitude of vector A + vector B + vector C + vector D is
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Let  magnitude of three vectors a=2; b=3 ; c=6. Angle between any two vector is 120 degree and the vector are coplaner ,find magnitude of resultant vector
Asked by tusharbailwal8 | 22 Apr, 2019, 07:26: AM
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