Physics

The flow of charge in an electric circuit signifies the existence of electric current in that circuit. We can define electric current as the rate of flow of electric charges (electrons) in a conductor (for example copper or metallic wire). Flow of charge definition The flow of charge is the process of supplying or adding […]

In this article, we will learn about the difference between resistance and resistivity. Students first come across these terms while studying Electricity where the concept of electric current, resistance and resistivity are introduced. For the basic introduction visit our notes on electricity. TLDR – Too Long Don’t ReadBoth resistance and resistivity describe how difficult it […]

In this article learn about the what is graph in physics and how to plot a basics of graphs in physics. Here you will learn about  Why we need graphs What are graphs and How to plot graphs After reading this article students would be able to define graphs and plot graphs using data on […]

Introduction to the concept of trajectory A trajectory is the path followed by an object with mass in curvilinear motion (curved path)  as a function of time. Mathematically ,It is defined by the equation in x-y coordinates. A famous example would be projectile motion like the  ball thrown an angle  or a bullet fired from […]

This can be done in these simple steps

1) First draw a free body diagram of the body showing all the forces on it.

2) Carefully choose a X-Y coordinate system so that direction of the motion or direction of force lies in X or Y direction. This will simplfy the Problem

3) Applying Newton’s law find out any unknown forces