work-energy-and-power CONCEPT FOR 11TH STANDARD

PHYSICS WORK ENERGY POWER CONCEPTS

1. Work ,Energy and power

2. Work ,Energy and power

3. Scalar product

4. Work done by variable force

5. Numerical

6. Kinetic Energy

7. Work-Energy Theorem

8. Potential Energy

9. Conservative and Non-conservative force

10. Conservation of Mechanical Energy

11. Potential Energy of a Spring

12. Potential Energy of a Spring

13. Potential Energy of a Spring

14. Numerical

15. Various Forms of Energy

16. Various Forms of Energy

17. Various Forms of Energy

18. Various Forms of Energy

19. Mass –Energy Relation

20. Power

21. Power

22. Collisions

23. Collision in one dimension

24. Collision in one dimension

25. Collisions in one dimensions

26. Collisions in one dimension

27. Completely inelastic collision

28. Numerical

29. Collisions in two dimensions

30. Collisions in two dimensions

31. Collisions in two dimensions

32. Example : Two balls initially travelling along the x-axis with opposite velocities collide with each other obliquely, is it possible that they will move in the y-axis after collision? Solution : Yes, it is possible, if the balls have same mass and travel with same speed. Initially their total momentum in x-direction was zero as their velocities were opposite; also in y-direction it is zero because they do not have velocity in that direction. Now after collision if their velocities are still equal and in opposite direction, the total momentum still remains zero.