Applied Mechanics and Graphic Statics
Force polygon method is applicable for

Concurrent coplanar force system
Any coplanar force system
Non-concurrent coplanar force system
A system of parallel forces only

ANSWER DOWNLOAD EXAMIANS APP

Applied Mechanics and Graphic Statics
If a set of given forces are such that their free vectors build a closed polygon, then

The resultant force and resultant couple both may not be zero
The resultant force is zero but resultant couple is not zero
The resultant force is zero but resultant couple may not be zero
The resultant force and resultant couple are always zero

ANSWER DOWNLOAD EXAMIANS APP

Applied Mechanics and Graphic Statics
Newton’s Law of Motion is:

The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction, in which the force acts
Everybody continues in its state of rest or of uniform motion in a straight line, unless it is acted upon by some external force
All listed here
To every action, there is always an equal and opposite reaction

ANSWER DOWNLOAD EXAMIANS APP