Work
Work is when a force causes a displacement of an object. Force, displacement and cause are the three parts of work. A dancer carrying another dancer is an example of work because there is a force acting upon an object to cause it to be displaced. The formula for work is: W = F • d • cos Θ. F = Force, D = Distance and the last part is the angle. The unit of work is the Joule (J).
Questions:
How much work is done by a dancer to lift a 15 N dancer 3 meters vertically?
(ANSWER: 45 J)
Is the following situation an example of work? A person applies a force to a wall.
(ANSWER: No, the object has to be displaced for it to be work.)
How much work is done by a dancer to lift a 15 N dancer 3 meters vertically?
(ANSWER: 45 J)
Is the following situation an example of work? A person applies a force to a wall.
(ANSWER: No, the object has to be displaced for it to be work.)