PART - 1 CH - 6 System of Particles and Rotational Motion — Physics STD 11 Science — Question
Gujarat BoardEnglish MediumSTD 11 SciencePhysicsPART - 1 CH - 6 System of Particles and Rotational Motion2 Marks
Question
What is the center of mass? Is it necessary for an object to have mass at its center of mass?
✓
Answer
(i) The center of mass of a particle system is the point at which the entire mass of the particles of that particle system can be considered effectively concentrated for the study of its translational motion. (ii) The center of mass is the point around which the vector sum of the mass moments of all the particles of the particle system is zero i.e. $\sum_{i=1}^{i=n} m_i \overrightarrow{r_i}=0$ where $\overrightarrow{r_i}$ relative to the center of mass. It is position vector of the $i$ th particle, it is not necessary for any mass to be physically present at the center of mass.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.