define work ,give SI unit of work, calculate the work done in pushing an iron block through a distance of 4.5 m against the force of friction equal to 200N. also state the type of work done
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Answered by
40
Work can be defined as the product of force and displacement.
The SI unit of work is the joule (J), which is defined as the work expended by a force of one newton through a distance of one metre.
W = Fs = 200 × 4.5 = 90 J
The SI unit of work is the joule (J), which is defined as the work expended by a force of one newton through a distance of one metre.
W = Fs = 200 × 4.5 = 90 J
what type of work done in here
Why is my answer reported ?
its not 90 its 900J
Do u expect me to be robot ?
Answered by
29
Work is d product of force and displacement
Si unit of work is joule
Wd= f* s
Wd= -200*4.5
Wd=-900 joule
We took force as negative becoz it is acting against d force of friction. Therefore d type of work done is negative
Definition for joule is...when a force I Newton displaces a object at a path of 1 metre.
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