Q. Which of the following groups of forces could be in equilibrium
A) $3\ N,\ 4\ N,\ 5N$
B) $4\ N,\ 5\ N,\ 10\ N$
C) $30\ N,\ 40\ N,\ 80\ N$
D) $1\ N,\ 3\ N,\ 5\ N$
Explanation
(a) For equilibrium of forces, the resultant of two (smaller) forces should be equal and opposite to third one
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.