Chap 1 : Work and energy

Paragraph  1

Work of a force

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Paragraph  2

Kinetic energy

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Paragraph  3

Potential gravitational energy

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Paragraph  4

Mechanical energy

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Paragraph  5

Conservation of mechanical energy

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Paragraph  6

Non-Conservation of mechanical energy

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Details of the course

P 1

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P 2

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P3

In observation 3, the skier acquires more and more kinetic energy when descending downwards.

Question 4: From where did this energy come from? i.e. what is its origin?
Answer: From the energy stored between the skier and earth.

Question 5: What is the form of the stored energy in the system (Skier –Earth)?

Answer: Potential gravitational energy;   Gpe.

Observation 3

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P4

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P5

 Principle of conservation of mechanical energy:

                         

ME = Constant

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P6

In the presence of friction; the mechanical energy is not conserved.

Then,we can write 

with 

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💢  summary  💢

يمكنك تنزيل الملخص بعد تفعيل إشتراكك على الموقع

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💢  Course {{Powerpoint}} :

Class ES-LH  presentation Power point     by  Samah Braidi

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Applications

	Exercices	Link
1	Exercice 1 - Voir video 👉
2	Exercice 2 - Voir video
3	Exercice 3 - Voir video
4	Exercice 4 - Voir video
5	Exercice 5 - Voir video
6	Exercice 6 -