Question

Rezolvati problema va rog !!!

Answer 1

[tex]Se~da:\\ \\ m=1kg\\ \\ \alpha=30^\circ\\ \\ \mu=0,2\\ \\ g=10\frac m{s^2}\\ \\ F=?N\\ \\ \\ Formule:\\ \\ Ox:\\ \\ F+F_{fr}=G_{x}\\ \\ F+\mu\times N=G\times \sin \alpha\\ \\ \\ Oy:\\ \\ N=G_y\\ \\ N=G\times \cos\alpha\\ \\ \\ F+\mu\times G\times\cos\alpha=G\times\sin\alpha\\ \\ F=m\times g \times (\sin\alpha-\mu\times\cos\alpha)\\ \\ \\ Calcule:\\ \\ F=1\times10\times(\sin 30-0,2\times\cos 30)\approx 3,4N[/tex]