I. All the three forces must be concurrent.
II. Th...
I. All the three forces must be concurrent.
II. The upward force is equal to the downward force.
III. The algebraic sum of the moment about any point must be zero.
which of the above conditions must hold for a body acted upon by a system of three coplanar forces equilibrium?
I and II only
I and III only
II and III only
I, II and II only
Correct answer is D
The condition (ii) is a condition for an equilibrium of parallel forces only while conditions (i) and (iii) are correct for both parallel and non- parallel coplanar forces.
No specifications are made, so all conditions apply.
Which of the following has the shortest wavelength? ...
The eyeball consists of a round tough white skin called ...
Which process is responsible for production of energy in stars? ...
An astronomical telescope is said to be in normal adjustment when the? ...
According to Newton's law of cooling, the heat energy lost per unit area of a body depends on th...
The vacuum between the double walls of a thermos flask reduces heat loss through ...