Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

JEE Class main Answered

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
answered-by-expert Expert Answer
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
Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
JEE main - Physics
two vectors vector a and vector B lie in one plane vector c lie in the different plane then vector a + vector b + vector c is
Asked by vaishalinirmal739 | 29 Aug, 2024, 18:07: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
if pbar=ibar+3jbar-7kbar and q=5ibar - 2jbar+4kbar then the length of vector pqbar is
Asked by senapareddirajeshkumar8 | 13 Jul, 2024, 16:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
a vector is inclined at theta to the horizontal and it's vertical component is Y. then magnitude of that vector is
Asked by ymydheli | 10 Jul, 2024, 19:20: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
find the magnitude of resultant of the following three forces acting on it F1= 20N acting in East direction F2 20N acting in northeast direction F3= 20 N acting in south direction
Asked by ishnica7 | 12 Jun, 2024, 20:04: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
physics
question image
Asked by mananbansal016 | 10 Jun, 2024, 19:50: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
find the value of
question image
Asked by sohan123asiwal | 12 May, 2024, 17:52: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
10meast 12m north 4m south 4m West find the displacement
Asked by anjjuchalla7 | 28 Oct, 2023, 20:31: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
A person moves 3m east 4m north then find magnitude of displacement of the person
Asked by anjjuchalla7 | 27 Oct, 2023, 19:03: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
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)
Asked by shubhkansal75 | 23 Nov, 2022, 21:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
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, 20:39: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt