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Intro to springs and Hooke's law Video Lecture | Crash Course for PAT

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FAQs on Intro to springs and Hooke's law Video Lecture - Crash Course for PAT

1. What is work and energy?
Ans. 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. Energy, on the other hand, is the ability to do work. It can exist in various forms such as kinetic energy, potential energy, and thermal energy.
2. How is work calculated?
Ans. Work is calculated by multiplying the force applied to an object by the distance the object moves in the direction of the force. The formula for work is W = F * d, where W is work, F is the force, and d is the distance.
3. What are the units of work and energy?
Ans. The units of work and energy are both measured in joules (J). One joule is equal to the work done when a force of one newton is applied to move an object one meter in the direction of the force.
4. What is the relationship between work and power?
Ans. Work and power are related concepts. Work is the amount of energy transferred or transformed, while power is the rate at which work is done. Power is calculated by dividing the amount of work done by the time it takes to do the work. The formula for power is P = W / t, where P is power, W is work, and t is time.
5. Can work and energy be negative?
Ans. Yes, both work and energy can be negative. Negative work occurs when the force applied to an object is in the opposite direction of the displacement. Negative energy can also exist, such as in the case of gravitational potential energy when an object is below a reference point.
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