Correct Answer:
Option C - Externally unstable or essentially unstable:
Any system is said to be externally unstable if all the reactions of the system are – (a) concurrent
(b) Parallel
– If all the reactions are parallel – Rigid body translation.
– If the reactions are concurrent – Rigid body rotation.
C. Externally unstable or essentially unstable:
Any system is said to be externally unstable if all the reactions of the system are – (a) concurrent
(b) Parallel
– If all the reactions are parallel – Rigid body translation.
– If the reactions are concurrent – Rigid body rotation.