The scientific meaning of work?

Question

kinda confused for a science project

I need help pronto

hacked on the school computer blocked page

I dont understand "work" at all

smartie help needed

Answer 1

Work in the mechanical sense is simply the energy required for a force to operate over a distance. If I lift a weight of one pound through one foot, I have performed one foot-pound of work.

Another way of looking at it is if an external force acts upon an object, causing its kinetic energy to change from Ek1 to Ek2, then the mechanical work (W) is given by Ek2-Ek1.

If system a transfers mechanical energy to system b, then it does work on it.

Hope this helps.....

Answer 2

The formula for work is force X distance.

Note that if something is not moved, the distance is zero, and the work will be zero.

The product of the force exerted on an objects multiplied by the distance that it is moved.

Answer 3

Work means a different thing to a scientist than it does to a regular person.  Perhaps an example might point this out the best.  Suppose a 5 pound rock is moved from Chicago to New York to Indianapolis.  Most people would add up the total distance covered and convert that to work.  The scientific definition is the distance a mass has been moved.  Thus from a scientific point of view, the only work done on the rock was the distance from Chicago to Indianapolis.

Answer 4

Work is the change of energy of a system.  If the energy of a system rises, work is being done to it.  If the energy falls, the system is doing work.  Keep in mind that the energy of a system is the sum of the kinetic energy and the potential energy in the system.

Answer 5

work = force * distance