Find the magnitude of the two forces, such that if they act at right angles, their resultant is 10 N . But if they Act at 60, their resultant is root13 N .
ACT Exam: Preparation Tips
Hello Priya,
Let us assume two forces F1 and F2.
In the question , there are two conditions given and accordingly we need to solve the equations by forming two equations.
In the first condition, the angle between two forces is 90 degree so apply the formula for the resultant which is =
F1^2 + F2^2 +2F1F2 *cos 90 = 10^2 - - - (i)
In the second condition the equation will come out to be :-
F1^2 + F2^2 + 2 F1F2 cos 60 = (√13)^2 - - - 2
So from the first get the value of F1 in terms of F2 and substitute in the second equation and a quadratic equation will be formed.
Related Questions
Know More about
American College Testing
Application | Eligibility | Exam Pattern | Preparation Tips | Result | Dates | Syllabus
Get Updates Brochure
Your American College Testing brochure has been successfully mailed to your registered email id “”.
