Question

A force of (2î +3j+4k) N and another force of (i + j + k) N are acting on a body. The magnitude of the total force acting on the body is given by Croot2. Find C.​

Answer 1

c=5

|f1+f2|=root of 50=5×root of 2

given:

croot2=|f1+f2|=5root2

which implies

c=5

Answer 2

Answer:

C=5

Explanation:

Resultant vector :3i+4j+5k

magnitude =$\sqrt{3^{2}+4^{2}+5^{2} }$

                  =$\sqrt{9+16+25}$

                  =$\sqrt{50}$

                  =5$\sqrt{2}$=c$\sqrt{2}$