Q.Consider following forces: (w) Force due to tension along a string,

All forces observed in nature reduce to just four FUNDAMENTAL interactions. The GRAVITATIONAL force is the universally attractive force between any two masses, $F=\frac{Gm_1m_2}{r^2}$; it is the weakest of the four for ordinary masses but has infinite range and governs the large-scale structure of the universe (our own weight is its everyday manifestation). The ELECTROMAGNETIC (EM) force, both attractive and repulsive between charged particles, is far stronger than gravity and underlies almost every contact force of daily life -- friction, normal reaction, tension, collision forces, and viscosity are all fundamentally electromagnetic. The STRONG NUCLEAR force is the strongest of all four but has an extremely short range, binding protons and neutrons together inside atomic nuclei. The WEAK NUCLEAR force, responsible for radioactive beta decay, is stronger than gravity but far weaker than the strong and EM forces, and has the shortest range of the four.

Because everyday-sized objects have far too little mass for their mutual gravitational attraction to matter, and because strong/weak nuclear forces only act over subatomic distances, the electromagnetic force is effectively the only fundamental force that governs ordinary daily-life mechanics -- every push, pull, grip, and collision we experience traces back to it.