Category Archives: Mechanics

Kinetic energy of system of particles

This article is about Kinetic energy of system of particles. This topic comes under the chapter Dynamics of System of Particles. It is for B.Sc. students and comes under subject mechanics. For full chapter notes links please visit this link Dynamics of System of Particles Kinetic energy of the system of particles Let there are n number of particles in a n particle system and … Continue reading Kinetic energy of system of particles »

Coordinate transformation : translation, inclined and rotation

This article is about Coordinate transformation . In this article we will look at coordinate transformation in case of translation, inclination and rotation of S’ frame of reference with respect to S frame of reference. This article is mainly for B.Sc. first year and comes under subject Mechanics. Coordinate transformation If we define the position of a particle in two different frames of then in … Continue reading Coordinate transformation : translation, inclined and rotation »

Newton’s laws of motion and applications

This article is about Newton’s laws of motion and applications for B.Sc first year students and is also applicable if you are preparing for exams like JAM , GATE, JEST , CSIR-NET etc. It comes under the subject Mechanics. If you like the content do help us by sharing it among your fellow students. Introduction Sir Isaac Newton expressed his ideas regarding the motion of … Continue reading Newton’s laws of motion and applications »

Vector Questions

This page contains Vector questions for B.Sc. first year mechanics. You can also practice these questions if you are appearing for any after B.Sc. entrance exams(ex. IIT JAM) for pursuing M.Sc. Question 1 Define direction cosines of a vector. If  $l_1$, $m_1$, $n_1$ and $l_2$, $m_2$, $n_2$ are the direction cosines of two vectors show that the angle $\theta$ between them is given by $cos\theta … Continue reading Vector Questions »

Introduction to mechanics

So, what is mechanics? Mechanics we can say is an exact science. Again the question is what do I mean by an exact science. When we say that the physics or any branch of it is an exact science by this we mean that , its laws are expressed in the from of mathematical equations which describe and predict the results of precise quantitative measurements.

Spherical Polar co-ordinates

This article is about Spherical Polar co-ordinates and is aimed for First year physics students and also for those appearing for exams like JAM/GATE etc.
The spherical polar coordinates represent the coordinates of points on the surface of a sphere in a co-variant form. The coordinates of the point P in this system is represented by the radial vector r which is the distance from the origin to the point, the polar or