Forces in Equilibrium

1.3

Forces in Equilibrium

	Forces in equilibrium
	An object is said to be in equilibrium of forces when the forces acting on it produce a zero resultant force.

Cosine rule

\(a^2=b^2+c^2-2bc\cos A\)

\(b^2=a^2+c^2-2ab\cos B\)

\(c^2=a^2+b^2-2ab\cos C\)

	Sine rule
	\(\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}\)

1.3

Forces in Equilibrium

	Forces in equilibrium
	An object is said to be in equilibrium of forces when the forces acting on it produce a zero resultant force.

Cosine rule

\(a^2=b^2+c^2-2bc\cos A\)

\(b^2=a^2+c^2-2ab\cos B\)

\(c^2=a^2+b^2-2ab\cos C\)

	Sine rule
	\(\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}\)