to enroll in courses, follow best educators, interact with the community and track your progress.
Enroll
178
Course Intro and Force, Inertia, Momentum, Impulse & NLM #1 (in Hindi)
1,515 plays

More
In this lesson we'll discuss on various topics as force inertia momentum impulse newton's law of motion etc

## Kumar Ketan is teaching live on Unacademy Plus

Kumar Ketan
#Specialisation in Electronics #6 years teaching experience #Physics Faculty in Kota #"magical education" (211k+ subs) #Writer

U
great course for a beginner. hope to see more courses on ML adavanced topics
1. ne

3. CRAs4 Physics course for IIT JEE Kinematics & Dynamics 1D Non-Accelerated Motion 1D Accelerated Motion Force Frictional Force Newton's Law of Motion Relative Motion

4. FORCE Force as an external effort in the form of push or pull, which (i) produces or tries to produce motion in a body at rest, or (ii) stops or tries to stop a moving body, or (iii) changes or tries to change the direction of motion of the body.

5. 1.Inertia The property of a body to continue in its state of rest or that of uniform motion in a straight line in the absence of external force is called inertia. Newton's first law of motion is the law of inertia. 2. Momentum The product of mass (M) of a body and its velocity (v) is called momentum (p"). Thus p Mv. Its unit is kg m/s.

6. 3. Newton's second law of motion- This law states that the time rate of change of momentum is equal to the applied force (F). That is IS: dp /dt Where a" - dv'/dt is the acceleration of the body

7. However, if the force acts and velocity remains constant, then we find: Such is the case with system having variable mass

8. 4. Impulse- The product of force (F) and the time interval (dt) for which the force acts is called impulse (i) That is The unit of impulse is Ns. It is equivalent to kg m/s.

9. 5. The impulse is also equal to the area between the time axis and F-t graph. Impulse area

10. 6. Newton's third law of motion To every action (A"), there is equal and opposite reaction (R"). That is The action as well as reaction of forces acting on different bodies. herefore they do not cancel each other. They are mutual forces. One is the cause of the other and exist simultaneously.

11. Mass varies with velocity, hence F dp/ dt

12. Because F Ma is applicable when mass does not vary. In case of the rocket, the mass continuously varies.