why are there different formulas used for workenergy in dyna

why are there different formulas used for work-energy in dynamics?

Solution

SOlution :

This is because basically work and energy are different in terms of concepts. Let me give an scenario to be clear

So if a body is at a height H then it posesses potential energy and lets assume some forces are applied to that body and it displaces by some distane. Now the body posesses the final energy so we can write the realtion as

Initial energy + work done on the body = FInal energy

Hope this makes it clear for you stating energy and work are not same.