angle that vector A=2i^+3j^ makes with the y axis is the equi;ibrium of asystem of coplanar forces is - Physics - Motion In A Plane

Question

angle that vector A=2i^+3j^ makes with the y axis is ?
the equi;ibrium of asystem of coplanar forces is a force of 10N
due east the resultant of the forces is ?
the resultant of which cant be zero
a-10,10,10 b-10,10,20
c-10,20,20 d-10,20,40
three coplanar forces 100N 150N 200N ACTING AT A POINT and
keeping the point at equi;ibrium are represented by the sides of a
triangle ratio of the sides is ?

Neha Gupta · Accepted Answer

A→= 2i^ + 3j^let B vector is y axisB→ = j^A→ = 4 + 9  = 13B→ = 1A→
B→ = A→B→ cosθwhere θ is the angle between them
2i^ + 3j^
j^ = 13 cosθcosθ = 313θ = cos-1313

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