Hi, I don\'t quite know how to approach this problem. Some guidanceand explanati

Question

Hi,

I don't quite know how to approach this problem. Some guidanceand explanation on how to arrive at the correct answer(s) would begreatly appreciated.

16. An object of mass m undergoes an acceleration ofa down a rough incline. Which of the followingforces should not appear in the free-body diagram for theobject? Choose all correct answers.

A. the force of gravity

B. ma

C. the normal force of the incline on the object

D. the force of friction down the incline

E. the force of friction up the incline

F. the force of the object on the incline

Thanks,

Explanation / Answer

When using Free Body Diagrams you only include forces that act onthe object, not forces that the object puts on something elsetherefore F should not be included Also the force of friction opposes motion, so if the object movesdown the incline the friction force acts in the direction up theincline. Therefore the force of the friction down the inclineshould not be included D. F D

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