Tag: mass
-
Class 9th – STRUCTURE OF ATOM (Atomic & Mass Number)
We have already discussed the model of an atom and also were the subatomic particles are present inside an atom. Atomic Number As we know that the protons are present inside the nucleus , so the atomic no. of an element is defined as the number of protons present in an atom. Therefore, atomic number…
-
Class 9th – POTENTIAL ENERGY
The energy possessed by a body due to its position or configuration is called Potential Energy. EXAMPLES OF POTENTIAL ENERGY A stretched rubber band possesses potential energy. A raised object possesses potential energy. Water that is stored in the dam possesses potential energy.
-
Class 9th – KINETIC ENERGY
Any object that is having the capability to do work possesses energy. The energy possessed by a moving object is called Kinetic Energy. The energy can be transferred from one form to another, i.e. an object S does the work on object K, if an object S which does the work looses energy and the…
-
Class 9th – Gravitation – MASS & WEIGHT
According to Galileo, Two bodies of different masses dropped from the same height will touch the floor at the same in the absence of air resistance. For example, if we drop two objects of masses 5kg and 8kg from same height then both the object will reach at the surface of earth at same…
-
Class 9th – Gravitation – FREE FALL
FREE FALL Whenever objects fall on the earth which is due to gravitational pull and this gravitational pull of earth which makes object fall towards it under this force alone is called as FREE FALL. When the object fall towards the earth, there will be no change in the direction of motion but as the…
-
Class 9th – GRAVITATION
Earth attracts every object towards it by a force. This force is called force of gravitation or gravitational pull. This gravitational pull is also called as fore of attraction, as it attracts things towards earth. An object falls on the earth and this is due to force of Gravity or Gravitational pull. Example: When you…