alleryYou balance a cardboard sheet on a pencil tip. The balance point is its:
AFulcrum point
BAxis of rotation
CRadius of gyration
DCentre of gravity
Answer & Solution
Correct answer: D. Centre of gravity
1. At that point the total gravitational torque is zero.
2. The sheet neither tilts nor falls.
3. That point is the centre of gravity.
_Source: syllabus Physics Part I, Chapter 7, Systems of Particles and Rotational Motion._
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