Gravitation

The topic introduces us to the gravitation as a weak force when small bodies of less masses are involved. It discusses the universal law of gravitation and its importance.

In this topic, we will study the concept of free fall with various examples. It derives the value of gravitational force and explains how to solve questions. It also describes the motion of objects under the influence of gravitational force of the Earth.

In this topic, we will learn how to calculate the mass of an object. It explains the method of approach to the questions with the help of solved examples. We will also study that the mass of an object remains constant and does not change from place to place.

This topic explains the concept of weight and how to measure it. It also lists the equipment used to measure weight and the standard and other units of its measurement.

This topic explains the phenomena called thrust and pressure. It includes situations and examples to elaborate the topic. It also provides formulas and derivations. Solved problems and questions are also covered for better understanding.

In this topic, we will study about Archimedes principle. It highlights an illustration where a stone is tied to a spring balance and is hung in air and in water to explain this principle. The difference in the elongation is also discussed here.

From this topic, we will get to learn about density and relative density. We will learn about the formula of relative density. We will also come across various sample problems to understand its applications.