question_answer

The resultant R of two forces acting on a particle is at right angles to one of them and its magnitude is one-third of the other force. The ratio of larger force to smaller one is     AIEEE  Solved  Paper-2005

A) \[3:2\sqrt{2}\]            

B)        \[3:2\]                  

C)        \[3:\sqrt{2}\]              

D)        \[2:1\]

Correct Answer: A

Solution :

If R is a resultant of two forces P and Q acting on a particle, then and Since,    and