Friction - Discussion & Derivations

Friction WriteUp 

In this document, you can read about Friction basics. You will also find derivation of the the below cases:

1. Vehicle revolving around a circular horizontal track

2. Man/Vehicle revolving in a "Well of Death"

3. Vehicle revolving around a circular banked track (ignoring friction)

4.  Vehicle revolving around a circular banked track (with friction) 

4(a) at a lower speed

4(b) at higher speed

Have a look at this awesome Virtual Lab also : https://www.thephysicsaviary.com/Physics/Programs/Labs/ForcesOnInclineLab/

https://www.thephysicsaviary.com/Physics/Programs/Labs/CircularFrictionTestTrack/

 

 

IGCSE Cambridge Maths 0580Past Papers 2020 | Stationery/Turning Points | Finding Maxima/Minima / Increasing Decreasing Functions

 IGCSE MATHS(0580) 2020 Papers

 

In this video, we solve IGCSE Cambridge Maths 0580 past papers 2020. The topic is Stationery/Turning Points | Maxima/Minima. 

 

Papers that we solve are 0580-s20-qp-41 ; 0580-s20-qp-42 ; 0580-s20-qp-43 ; 0580-m20-qp-42

 

This is useful for other boards also as Maxima/Minima problems are relevant to everyone doing Calculus or Calculus based Physics.  

 

We solve these questions in this video.
 

 

 

 

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In this video, we learn how to identify increasing / decreasing functions by first derivative and second derivative functions. 

Extra practice problems:

Solved IGCSE Cambridge Maths Extended (0580) June 2020 | 0580-s20-qp-42

Click here for links: 

 0580-s20-qp-42

0580-s20-ms-42 

Solved IGCSE Cambridge Maths Extended (0580) June 2020 | 0580-s20-qp-41

Click here for paper links :

0580-s20-qp-41 

0580-s20-ms-41 

 

Man in a moving Elevator - Discussion and Solved Worksheet

In this lecture we derive Apparent Weight of a man in accelerated elevator. Before that have a detailed discussion on the pseudo forces and how to apply them in Non Inertial Frames. 

 

 CLICK HERE FOR WORKSHEET

Also check the video where I have solved this worksheet.