A 250-N force is directed horizontally as shown to push a 29-kg box up an inclined plane at a constant speed. Determine the magnitude of the normal force, FN, and the coefficient of kinetic friction, µk.
FN µk
(a) 330 N 0.31
(b) 310 N 0.33
(c) 250 N 0.27
(d) 290 N 0.30
(e) 370 N 0.26
My attempt:
I know FN = mg
so FN = (29kg) (9.8 m/s^2)
FN = 284
why is it not right?
FN µk
(a) 330 N 0.31
(b) 310 N 0.33
(c) 250 N 0.27
(d) 290 N 0.30
(e) 370 N 0.26
My attempt:
I know FN = mg
so FN = (29kg) (9.8 m/s^2)
FN = 284
why is it not right?
0 commentaires:
Enregistrer un commentaire