NCERT explained

11th Physics chapter 4

Loading document, please wait…

Loading MCQs…

Loading Fill in the Blanks…

Topics to study from the chapter in the attached file along with 1-2 lined summaries for each:

1. Action-reaction pairs:

– Mutual forces between two bodies that are equal and opposite.

2. Free-body diagrams:

– Drawing diagrams to represent the forces acting on a body to solve problems in mechanics.

3. Equilibrium of a particle:

– Refers to the situation when the net external force on a particle is zero.

4. Solving Problems in Mechanics:

– Using the three laws of motion to analyze problems involving multiple bodies and forces.

5. Conservation of Momentum:

– Total momentum in an isolated system remains constant over time, even during interactions between particles.

6. Newton's Laws of Motion:

– Newton's laws describe the relationship between an object's motion and the forces acting on it, providing a foundation for mechanics studies.

7. Application of Laws of Motion:

– Applying Newton's laws to solve problems involving forces and motion in various scenarios, such as collisions and equilibrium.

8. Circular Motion and Friction:

– Understanding forces in circular motion, such as centripetal force and friction, to analyze scenarios like banking roads for vehicles.

9. Optimum Speed and Maximum Permissible Speed:

– Calculating speeds in scenarios involving circular motion, banking roads, and friction to determine safe operating conditions for vehicles.

What is the trajectory of a bob of mass 0.1 kg when the string is cut while the bob is at its mean position?

Show Answer

When a man of mass 70 kg stands on a weighing scale in a lift moving upwards with a uniform speed of 10 m/s, what would be the reading on the scale?

Show Answer

What is the force on a particle of mass 4 kg for 0 < t < 4 s on a position-time graph?

Show Answer

In a circular racetrack of radius 300 m banked at an angle of 15°, what is the optimum speed of the race-car to avoid wear and tear on its tires?

Show Answer

What are the steps recommended to systematically handle a typical problem in mechanics?

Show Answer

Loading DIYs…

Loading Real-World Examples…

Feedback Form