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Work and Energy

Conservation of Work and Energy

Conservation of Work and Energy equation is used to analyze the change in velocity of an object in motion based on its displacement due to applied force(s). The conservation equation is almost always preferred over kinematic equations as the magnitude of acceleration is not required to calculate initial or final velocity of an object. This is also known as principle of work and energy and this can be represented in equation as follows.

What does this mean ? What should I do to solve this equation ? A little bit expansion of the equation as follows would help you to understand overall meaning of the equation/

The equation above explains that the velocity of an object at state 2 is affected by the total applied work onto the object at state 1. Total work on/against the object can be done by weight, spring, couple moment, applied force, friction, etc.