Question

Rezolvati problema 1

Answer 1

[tex]Se~da:\\ \\ \alpha=30^\circ\\ \\ m=50kg\\ \\ F=294N\\ \\ a=?\frac m{s^2}\\ \\ N=?N\\ \\ \\ Formule:\\ \\ Ox:\\ \\ G_x+F_x=m\times a\\ \\ m\times g\times\sin\alpha+F\times\cos\alpha=m\times a\\ \\ a=\frac{F\times\cos\alpha}{m}+g\times\sin\alpha\\ \\ \\ Oy:\\ \\ G_y=N+F_y\\ \\ N=m\times g\times\cos\alpha-F\times\sin\alpha\\ \\ \\ Calcule:\\ \\ a=\frac{294\times\cos30}{50}+10\times\sin30\approx10\frac m{s^2}\\ \\ N=50\times 10\times\cos30-294\times\sin30\approx286N\\ \\ [/tex]