Asked by s
Two forces 4N and 5N are inclined to each other at 30°, find the resultant force by parallelogram method
Answers
Answered by
Damon
I can not draw your parallelogram.
However the angles are 30, 180 - 30 , 30 , 180-30
or in other words
30, 150, 30 , 150
now law of cosines to find resultant diagonal c
c^2 = a^2 + b^2 - 2 a b cos 150
c^2 = 16 + 25 - 2*4*5*(-.866) = 16 + 25 + 34.6
take square root to get c
However the angles are 30, 180 - 30 , 30 , 180-30
or in other words
30, 150, 30 , 150
now law of cosines to find resultant diagonal c
c^2 = a^2 + b^2 - 2 a b cos 150
c^2 = 16 + 25 - 2*4*5*(-.866) = 16 + 25 + 34.6
take square root to get c
Answered by
Blessing
Please I do not understand
Answered by
Uzor
Pls use triangle method
Answered by
Anonymous
If two force of magnitude 5n and 7n acting at a point o are inclined at an angle 60o to each others find the magnitude of the resultant force and direction
Answered by
Blah
Please use triangle method
Answered by
WINNER
WRONG ANSWER
Answered by
Faruq
Use calculation
Answered by
Charlie
U guys are not science students
Answered by
Anonymous
Pls try to draw 8t it my home work
Answered by
Francis
I cannot draw the parallelogram but i can solve it:
F1=5N F2=4N
*angle=30°
using the cosine formula
R^2=B^2+C^2-2B Cos A
R^2=4^2+5^2-2×4×5 Cos 150
R^2=16+25-40(-0.8660)
R^2=41+34.64
R^2=75.64
Take the square from r by taking square root on both sides
Therefore;R=8.7N
F1=5N F2=4N
*angle=30°
using the cosine formula
R^2=B^2+C^2-2B Cos A
R^2=4^2+5^2-2×4×5 Cos 150
R^2=16+25-40(-0.8660)
R^2=41+34.64
R^2=75.64
Take the square from r by taking square root on both sides
Therefore;R=8.7N
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