. A box of weight 220 N is being pulled to the right by a pulling force F of magnitude 30 N. The coefficient of static friction between the box and the floor is 0.15. To make an accurate free-body diagram of the box, the letter W in the diagram below should be replaced with the label .

The answer should be a.

Iam on that question know can you tell me the answer i am realy strruglingasap

Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge,    then the following gives us the potential difference,      the formula  may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get    using q = 8.00  × 10⁻¹⁹ c and  δv = 2.00 v, we get    the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.