Q.Find the odd man out:

[!TLDR] (ii) the weight of an object is the odd one out, since it is a non-contact (gravitational) force, while (i) a taut string and (iii) holding an object in hand are both contact/electrom …

(i) The force responsible for a string becoming taut on stretching is TENSION, a contact, electromagnetic force arising from intermolecular bonds within the string resisting stretching. (iii) The force by which we hold an object in the hand is also a contact, electromagnetic force -- essentially a normal-reaction/friction-type grip force between the hand and the object. (ii) The weight of an object, by contrast, is a NON-CONTACT, gravitational force, requiring no physical touching at all (it acts even through empty space, e.g. the Moon's weight due to Earth's gravity). Since (i) and (iii) are both contact/EM force …

Classify each force by the contact/non-contact and fundamental-origin schemes of 4.5.1-4.5.2, then f …

Focusing only on whether the force feels 'similar' in everyday experience rather than systematically checking …