Question

Find the size of the resultant of two force of 5N and 12N acting
a) opposite direction of each other
b)at 90 degree

Answer 1

Hey mate,

a) As per vector rules, The bet resultant will be in direction of the stronger force i.e. 12N and the net force will be 7N.

b) If at 90 degrees,

Magnitude = Root (a^2+b^2+2abcosx)

as cos90 = 0

so,

= Root (25 + 144)
= Root (169)
= 13

hope this helps you out!