Notes & Resources; Laws of motion Class 11th

DoubtConnect
3 min readSep 10, 2022

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The Physics syllabus for class 11 covers a wide range of topics in a very thorough manner, from Kinematics and Gravitation through Rotational Motion and Mechanical Properties of Fluids. One such topic, which describes the day to day happenings around us is Newton’s Laws of Motion. Establishing a grasp of the ideas associated to this topic, which is divided into three laws, is helpful for understanding a variety of daily activities as well as for passing international and government tests following 12th grade science. Therefore, we have compiled all the pertinent data for the laws of Motion class 11 curriculum in this blog..

Things under the Chapter

  • Introduction
  • Newton’s First Law of Motion
  • The Second Law of Motion
  • Newton’s Third Law of Motion
  • Solved Questions

For your Information, That might just not sound alot but it is, seriously IT IS. So You don’t need to worry about anything, Doubt Connect, got your back.

Tips and Tricks

  1. The tension of the string is read by the spring balance.
  2. The value of the Normal Reaction is read by the weighing machine ( the force which is always perpendicular to the contact surface of the body).
  3. (imp)-All masses connected by the string will have the same magnitude if the string is inextensible and all polleys are fixed.
  4. For movable polleys, the acceleration of each mass varies. We employ THE TENSION TRICK to determine a relationship between their velocities!

Probability Class 11 Key Notes

1. When individual bodies are given in the system, always draw FBDs (making a specific diagram of a body and indicating its contact forces and their directions) (Blocks, Pulleys etc)

*Always employ the idea that “Tension always acts away from the body” when illustrating the direction of tension force in contact with a body’s FBD.

2. Determine in your mind the direction in which the bodies will move.

3. Create equations now based on the body’s sense of motion.

For instance, if a mass m body is travelling in a system with an acceleration a(let), then the net force acting on that body is ma. All contact forces acting on the body combine to create this net force.

Suppose:

F1-F2-F3=ma, this represents ,

F1 is parallel to ma,

F1> F2+F3 ,

forces F2 and F3 are opposing the sense of motion of the body i.e., opposite to ma as well asb F1.

Note- F1= F2+F3, iff a=0, i.e The body is moving with constant velocity.

How can I get access to the notes?

There are numerous notes online for Boards, Mains, and Advance exams, among others. So we will provide recommendations for you based on those needs.

You ought to have finished your NCERT for basics by this point.

Boards — Apni Kaksha | Physics Wallah

Mains — Unacademy JEE | Physics Wallah

Advance — GB sir Sheets | Any good Coaching material

Having said that, we also have our own Discord server, where you can relax and discover people you can study with.

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