f1=60N a 30° yF2=85N a 140°. hallar magnitud y la dirección de la fuerza resultante de dos fuerzas
guchii
⁰Explicacion F₁= 60 N a 30⁰ F₂= 85 N a 140⁰ R = ? Ф = ? ∑Fx = 0 Fx₁= 60 N cos 30⁰ = 51.96 N Fx₂= 85 N cos 140⁰ = - 65.11 N - 13.15 N ∑Fy = 0 Fx₁= 60 N sen 30⁰ = 30 N Fx₂= 85 N sen 140⁰ = 54.63 N 84.63 N R = √ (∑Fx)² + (∑Fy)² = √(- 13.15 N)² + (84.63 N)² = 85.64 N
F₁= 60 N a 30⁰
F₂= 85 N a 140⁰
R = ?
Ф = ?
∑Fx = 0
Fx₁= 60 N cos 30⁰ = 51.96 N
Fx₂= 85 N cos 140⁰ = - 65.11 N
- 13.15 N
∑Fy = 0
Fx₁= 60 N sen 30⁰ = 30 N
Fx₂= 85 N sen 140⁰ = 54.63 N
84.63 N
R = √ (∑Fx)² + (∑Fy)² = √(- 13.15 N)² + (84.63 N)² = 85.64 N
Ф = arc tang (∑Fy / ∑Fx) = arc tang (- 13.15 N) / (84.63 N) =
Ф = arc tang (- 0.1553) = - 8.82⁰