Answer:
W = 86 J
Explanation:
Work done by friction force is given by the formula
[tex]W = F_f . d[/tex]
here since the wagon is pulled by horizontal force such that speed remains constant
so here we will have
[tex]F_f = F_{ext} = 22 N[/tex]
Now we will have
[tex]W = 22\times 3.9 [/tex]
[tex]W = 86 J[/tex]
so work done against friction force will be equal to 86 J
The work done in pulling the wagon in the absence of friction is 458.64 J.
The work done in pulling the wagon is calculated as follows;
W = Fr
where;
Substitute the given parameters and solve for work done
W = 3.9 X (12 x 9.8)
W = 458.64 J
Thus, the work done in pulling the wagon in the absence of friction is 458.64 J.
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