Question

the resultant of p and q is perpendicular to p. if p=1/2q. angle between p and q is​

Answer 1

Resultent had no component along p since it is perpendicular to that direction.

So net component of all the forces in the direction of p is zero.

So p+ qcos A =0. Where A is the angle between p&q

A = cos ^-1 (-p/q)