2025\2026
Theoretical mechanics - CORRECT ANSWER-The science which treats of
the general laws of motion and equilibrium of material bodies and of
their resulting mutual interactions.
The branches of Mechanics - CORRECT ANSWER-Mechanics is divided
into statics, kinematics, and dynamics.
The Subject of Statics - CORRECT ANSWER-The branch of mechanics
which studies the laws of composition of forces and the conditions of
equilibrium of material bodies under the action of forces.
First Principle of Statics - CORRECT ANSWER-A free rigid body subjected
to the action at two forces can be in equilibrium if, and only if, the two
forces are equal in magnitude (F1=F2), collinear, and opposite in
direction
Second Principle of Statics - CORRECT ANSWER-The action of a given
force system on a rigid body remains unchanged If another balanced
force system is added to, or subtracted from, the original system.
, Corollary of the 1st and 2 nd Principles. - CORRECT ANSWER-The point
of application of a force acting on a rigid body can be transferred to any
other point on line of action of the force without altering its effect.
3 rd principle of the statics
(Parallelogram Law) - CORRECT ANSWER-Two forces applied at one
point of a body have as their resultant a force applied at the same point
and represented by the diagonal of a parallelogram constructed with
the two given forces as its sides.
4th principle of statics
(Newton's 3rd law) - CORRECT ANSWER-To any action of one material
body on another
there is always an equal and opposite reaction.
5th principle of statics
(Principle of Solidification) - CORRECT ANSWER-If a freely deformable
body subjected to the action of a force system is in equilibrium, the
state of equilibrium will not be disturbed if the body solidifies (becomes
rigid).