Kalics

  How to draw a vector diagram for the motion of Simple Pendulum as a Simple Harmonic Motion ? ( Smarter Techniques)      Students often find it confusing to represent the forces acting on a pendulum. Let’s break it down into simple, visual steps. A simple  pendulum is a heavy particle tied at the free end of  a long suspended   string at the support. But in practice, instead of a heavy particle, a heavy bob is attached.   The length of the pendulum is the distance between the point of support and the centre of the bob.    The bob oscillates and performs Simple Harmonic Motion (S.H.M.). Fig. A represents an oscillating simple pendulum. Fig A     Consider Bob of mass m is attached to a string of length L and is oscillating between A and C. Let the pendulum be at an angle Ө from  vertical.      The weight mg   is   resolved into two components: mgcos Ө  as t...

  How to Draw a Vector Diagram for a Vehicle Moving on  a Curved  Banked Road? (Smarter  Techniques)     Banking means making the roadbed slightly inclined to the horizontal. This is done at curved roads for safe driving. Fig. A represents a cross section of a banked road along with a vehicle on a curved road.      Fig A Consider a vehicle of mass m moving with velocity v on a curved road of radius r and banked at an angle of Ө.   The normal reaction by the roadbed on the vehicle N is resolved into Nsin Ө and Ncos Ө .   Nsin Ө acts as a centripetal force  mv/r on  the  vehicle.                 ∴   Nsin Ө = mv 2 /r   and NcosӨ  = mg = weight of vehicle. Using these equations we get    This is the safe velocity of a vehicle on a banked curved road. In my blog r...

How to Draw Physics Diagrams Smartly (For Class 10–12 Students)”        Physics is one of the important subjects, particularly for students in Std X to XII. There are different, easier methods to study physics, such as experimentation, relating the topic to everyday life examples and so on. With my 40+ years of experience in physics teaching, I have developed smarter methods of drawing diagrams so as to make physics study meaningful.       Usually teachers explain diagrams by drawing them on a blackboard. Students draw diagrams by learning also from books, PPT, Google Images, etc. But all these cases do not give information regarding how to actually draw diagrams on answer sheets of A4 size.        Do you want to know the technique? So let’s learn the smart techniques of drawing diagrams on an A4-sized answer sheet.   If these diagrams are drawn with the help of smarter techniques and by following the philo...

  Two Secrets of Circular motion      According to Newton's laws of motion, force is responsible for change in state of rest or state of motion of a body.   If   the force is applied on a body, then body moves in the direction of the applied force in the straight line. To change the direction of motion, it is necessary to change the direction of the applied force.    First Secret of  Uniform Circular Motion   The motion of particle along circumference of circle with constant speed is Uniform circular motion  ( U.C.M. )  .  Fig A     Consider a particle of mass m  moving along the circumference of   circle of radius r   (OA ) and tangential velocity V       ...