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Conservation of Energy and Spring Video Lecture | Physics Class 11 - NEET

FAQs on Conservation of Energy and Spring Video Lecture - Physics Class 11 - NEET

1. What is the principle of conservation of energy?

Ans. The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another. In a closed system, the total energy remains constant over time, meaning that the sum of potential energy, kinetic energy, and other forms of energy will always be equal.

2. How does a spring relate to the conservation of energy?

Ans. A spring stores potential energy when it is compressed or stretched. This potential energy can be converted into kinetic energy when the spring is released. The total energy in the system is conserved, as the potential energy in the spring transforms into kinetic energy of the moving object.

3. What is Hooke's Law and how does it apply to springs?

Ans. Hooke's Law states that the force exerted by a spring is proportional to its displacement from its equilibrium position, as long as the spring is not stretched or compressed beyond its elastic limit. Mathematically, it is expressed as F = -kx, where F is the force, k is the spring constant, and x is the displacement. This law helps explain how energy is stored in and released from springs.

4. Can you give an example of conservation of energy in a spring system?

Ans. A common example is a mass attached to a spring. When the mass is pulled down and released, it converts gravitational potential energy into elastic potential energy in the spring when it is compressed. As the spring returns to its equilibrium position, that potential energy is converted back into kinetic energy, demonstrating the conservation of energy principle.

5. How can the conservation of energy principle be observed in everyday life?

Ans. The conservation of energy can be observed in various everyday scenarios, such as riding a swing. At the highest points of the swing, the energy is mostly potential. As it swings down, that potential energy converts to kinetic energy, reaching maximum speed at the lowest point. This cycle of energy transformation illustrates the conservation of energy in action.

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Sep 23, 2025 Last updated

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