NEET > Physics Class 11 > Work, Energy & Power in One Shot (NCERT)
Work, Energy & Power in One Shot (NCERT) Video Lecture - Physics Class 11 - NEET
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FAQs on Work, Energy & Power in One Shot (NCERT) Video Lecture - Physics Class 11 - NEET
| 1. What is work in the context of physics? |  |
Ans. In physics, work is defined as the transfer of energy that occurs when a force is applied to an object and the object is displaced in the direction of the force. Work is directly proportional to the force applied and the distance over which the force is applied.
| 2. How is energy related to work? | |
Ans. Energy and work are closely related concepts. Work is the transfer of energy, and the amount of work done on an object is equal to the change in its energy. When work is done on an object, its energy increases, and when work is done by an object, its energy decreases.
| 3. What is the difference between kinetic energy and potential energy? | |
Ans. Kinetic energy is the energy possessed by an object due to its motion, while potential energy is the energy possessed by an object due to its position or configuration. Kinetic energy depends on the mass and velocity of the object, while potential energy depends on its height, displacement, or other factors.
| 4. How is power defined in physics? | |
Ans. Power is defined as the rate at which work is done or energy is transferred. It measures how quickly work is done or how quickly energy is transferred. Mathematically, power is calculated by dividing the amount of work done by the time taken to do the work.
| 5. Can you provide an example of how work, energy, and power are related? | |
Ans. Sure! Let's consider the example of lifting a box. When you lift a box from the ground to a shelf, you are doing work against the force of gravity. The work done increases the box's gravitational potential energy. The power used to lift the box is the rate at which work is done, which depends on how quickly you lift the box.
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