Question

Forces F1 and F2 act on a point mass in two mutually perpendicular directions . The resultant force on the point mass will be what?

Answer 1

We know that resultant,

R = √ A2 + B2 + 2BCosθ

∴R= √ F1^2 + F2^2 + 2F1F2Cos90

√ F1^2 +F2^2. (cos 90= 0)

so ans is √ F1^2+F2^2