Question

At what angle should the two forces 2P and `sqrt(2P)` and `Psqrt(2)P` act so that resultant force is `Psqrt(10)`?
A. `45^(@)`
B. `60^(@)`
C. `90^(@)`
D. `120^(@)`

Answer 1

Correct Answer - A
(a) `Psqrt(10)=sqrt(4P^(2)+2P^(2)+4sqrt(2)P^(2)costheta)`
:. `theta=45^(@)`