NCERT Solutions for Class 11 Physics Chapter 6 System of Particles and Rotational Motion - Physicskund
NCERT Solutions for Class 11 Physics Chapter 6 System of Particles and Rotational Motion - Physicskund 6.1 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 ? Solution : (i) The centre of mass of sphere is located at its centre. (ii) The centre of mass of cylinder is at the centre of its axis of symmetry. (iii) The centre of mass of a ring is at centre of the ring. (iv) The centre of mass of a cube is at its geometrical centre. The centre of mass may lie outside the body also, e.g., in case a ring, a hollow sphere, a hollow cylinder, a hollow cube etc. 6.2 In the HCl molecule, the separation between the nuclei of the two atoms is about 1.27 Å (1 Å = $10^{-10}$ m). Find the approximate location of the CM of the molecule, given that a chlorine atom is about 35.5 times as massive as a hydrogen atom and nea...