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Work, Power and Energy: Explanation of Work Video Lecture | Physics for JEE Main & Advanced
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FAQs on Work, Power and Energy: Explanation of Work Video Lecture - Physics for JEE Main & Advanced
| 1. What is work in the context of physics? |  |
Ans. In physics, work is defined as the product of the force applied to an object and the distance over which the force is applied in the direction of the force.
| 2. How is work calculated mathematically? | |
Ans. The mathematical formula for calculating work is: Work = Force x Distance x cos(θ), where θ is the angle between the force and the direction of motion.
| 3. What is the relationship between work and energy? | |
Ans. Work is directly related to energy, as work done on an object changes its energy. When work is done on an object, energy is transferred to or from the object, changing its kinetic or potential energy.
| 4. How is power related to work and energy? | |
Ans. Power is the rate at which work is done or energy is transferred. It is calculated by dividing the work done by the time taken to do the work. Mathematically, Power = Work / Time.
| 5. Can negative work be done on an object? | |
Ans. Yes, negative work can be done on an object when the force applied is opposite to the direction of motion. In this case, the work done is considered negative as it transfers energy away from the object.
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