Physics Vectors & Equilibrium PMDC Conceptual Practice
PMDC Verified Question 26 of 50
When a rigid body satisfies the first condition of equilibrium (\(\Sigma \vec{F} = 0\)), it is guaranteed to be in:
A
Translational equilibrium
B
Rotational equilibrium
C
Complete static equilibrium
D
Dynamic rotational equilibrium
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Translational equilibrium
Concept:
The first condition of equilibrium and its physical consequence.

Solution:
The first condition of equilibrium states that the vector sum of all forces acting on a body must be zero (\(\Sigma \vec{F} = 0\)). According to Newton's second law (\(\Sigma \vec{F} = m\vec{a}\)), this ensures that the translational acceleration of the body's center of mass is zero. Therefore, the body is in translational equilibrium.

Why other options are incorrect:
  • Rotational equilibrium requires the sum of all torques to be zero (the second condition).
  • Complete static equilibrium requires both translational and rotational equilibrium to be satisfied, and the body must be at rest.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

Previous Question All Vectors & Equilibrium MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App