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GRAVITATIONAL COMPONENTS. RECTANGULAR RESOLUTION WITH THE WEIGHT VECTOR. CAR. A CAR ON A HILL. W. The gravitational pull (W) is vertically downward. Weight vector. W=mg. This pull can be thought of in 2 components (pieces) relative to the hill. Parallel Component. Wx. W.
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GRAVITATIONAL COMPONENTS RECTANGULAR RESOLUTION WITH THE WEIGHT VECTOR
CAR A CAR ON A HILL W The gravitational pull (W) is vertically downward.
Weight vector W=mg This pull can be thought of in 2 components (pieces) relative to the hill.
Parallel Component Wx W One component parallel to the plane: this is the amount of weight unsupported by the hill.
Perpendicular Component Wy W One component perpendicular to the plane: This is the amount of pull that will be supported by the plane.
Components of the Weight Wx θ θ Wy W Wy = cos θ (mg) Wx = sin θ (mg) θ = angle of hill
CAR Free Body Diagram N f Wx = sin θmg θ θ Wy = cos θmg W
y– axis CAR N Wy = cos θ (mg) Fy = ma Fy = 0 :a = 0 on y-axis N – Wy = 0 N = Wy N = Cos θ (mg)
CAR x - axis f Wx = sin θ (mg) Fx = ma Fx = 0 if a = 0 Wx – f = 0 Wx = f sin θ (mg) = f