Question

Q. write the source of centripetal force,in Following examples:–
i) revolution of moon around the earth
ii) revolution of electron around the nucleus​

Answer 1

Answer:

1. earth

2. nucleus

are the source of centripetal force

Answer 2

The charge of the nucleus is positive and the charge of the electron is negative. There exists an electrostatic force between the positive nucleus and negative electrons. This electrostatic force supplies the necessary centripetal force for revolving of electrons around the nucleus.

• The moon orbits the Earth once every 27.322 days. It also takes approximately 27 days for the moon to rotate once on its axis.
• The Rate of Revolution of an Electron about an Atomic Nucleus. In the Bohr model of an atom an electron revolves about the center of mass of the electron and the nucleus. Even a single proton has 1836 times the mass of an electron so the electron essentially revolves about the center of the nucleus.