NCERT Solutions for Class 11 Physics Chapter 7 System of Particles and Rotational Motion
NCERT Solutions for Class 11 Physics Chapter 7 System of Particles and Rotational Motion Topics and Subtopics in NCERT Solutions for Class 11 Physics Chapter 7 System of Particles and Rotational Motion : QUESTIONS FROM TEXTBOOK Question 7. 1. Give the location of the centre of mass of a (i) sphere, (ii) cylinder, (iii) ring, and (iv) cube, each of uniform mass density. Does the centre of mass of a body necessarily lie inside the body? Answer: In all the four cases, as the mass density is uniform, centre of mass is located at their respective geometrical centres. No, it is not necessary that the centre of mass of a body should lie on the body. For example, in case of a circular ring, centre of mass is at the centre of the ring, where there is no mass. Question 7. 2. In the HCl molecule, the separation between the nuclei of the two atoms is about 1.27 A (1 A = 10 -10 m). Find the approximate location of the CM of the molecule, given that a chlorine atom is about 35.5 times as massive as...