Potential Energy Video Lecture | Engineering Mechanics - Civil Engineering (CE)

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FAQs on Potential Energy Video Lecture - Engineering Mechanics - Civil Engineering (CE)

1. What is potential energy?
Ans. Potential energy is the stored energy an object possesses due to its position or condition. It is the energy that can be converted into other forms of energy, such as kinetic energy, when the object is in motion.
2. How is potential energy calculated?
Ans. The calculation of potential energy depends on the type of potential energy involved. For gravitational potential energy, it is calculated as the product of the object's mass, the acceleration due to gravity, and the height of the object above a reference point. For elastic potential energy, it is calculated as half the product of the spring constant and the square of the displacement of the spring.
3. Can potential energy be negative?
Ans. Yes, potential energy can be negative. In systems where the reference point is chosen in a way that the object's potential energy is lower than zero, it is considered negative potential energy. This occurs, for example, in a gravitational system where the reference point is set below the ground level.
4. How does potential energy affect an object's motion?
Ans. Potential energy plays a crucial role in an object's motion. When potential energy is converted into kinetic energy, it accelerates the object, leading to motion. For example, a ball held at a certain height possesses potential energy, and when released, this potential energy is converted into kinetic energy, causing the ball to fall and move.
5. What are some examples of potential energy in everyday life?
Ans. There are several examples of potential energy in everyday life. Some common examples include a stretched rubber band (elastic potential energy), a roller coaster at the top of a hill (gravitational potential energy), a compressed spring (elastic potential energy), and water stored in a reservoir (gravitational potential energy).
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