Question Answers

Sahay Sir > Question Answers > NCERT Exemplar Class 11 > Physics > Chapter 6 - System of Particles and Rotational Motion > A child sits stationary at one end of a long trolley moving uniformly with a speed V on a smooth horizontal floor. If the child gets up and runs about on the trolley in any manner what is the speed of the centre of mass of the trolley + child system?

A child sits stationary at one end of a long trolley moving uniformly with a speed V on a smooth horizontal floor. If the child gets up and runs about on the trolley in any manner what is the speed of the centre of mass of the trolley + child system?

given that a chlorine atom is about 35.5 times as massive as a hydrogen atom and nearly all the mass of an atom is concentrated in its nucleus ? In the HCI molecule the separation between the nuclei of the two atoms is about 1.27Å (1Å=10^−10m). Find the approximate location of the c.m of the molecule