[填空题]
In Fig. 6-6a, assume the cnc120 dhj 6 3ks(ufa9 n/yytsdistancplhtyhb m3ar7 (t0 8a(e axis is linear and that $d_{\mathrm{A}}=10.0$ m and $d_{\mathrm{B}}=35.0$m. Estimate the work
done by force $F$ in moving a 2.80-kg object from $d_\mathrm{A}$ to $d_\mathrm{B}$ J