Direction of the work done by force of friction

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32 replies · 9K views
A.T. said:
And who suggested that?

See post 21. - final comment
 
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sophiecentaur said:
See post 21. - final comment

ah … that's me! :smile: …

tiny-tim said:
dreamz25 said:
… in all the cases the work done by kinetic friction is +ve?
i mean can never it be -v... Right..!
right! :smile:

… by "all the cases", dreamz25 and i were referring to an initially stationary block on an accelerating platform with all possible coefficients of friction :wink:
 

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