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Formula of work?by Jefferson1986
Tags: work 
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#1
Nov1111, 02:58 AM

P: 1

I found that work is Force * Displacement
When a force is applied on a body and the body is displaced My query is why mass of the body is not considered when work is calculated? Please answer. 


#2
Nov1111, 03:16 AM

P: 2

Mass is actually considered. Force is mass times acceleration.



#3
Nov1111, 04:37 AM

Mentor
P: 41,326




#4
Nov1111, 04:52 AM

Sci Advisor
PF Gold
P: 11,958

Formula of work?
Where possible, it is best to keep a definition simple  involving as few variables as possible. There are a million different ways of doing 1kJ of work, some involving a lot of change in Kinetic Energy (throwing something) and some involving more of a change in Potential Energy (raising something slowly). By defining work in terms of force times displacement in the direction of the force ( important to include that!) you eliminate the need to consider what the work is actually 'doing', because that is not necessarily relevant to the energy that is put into the process.



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