Step 3: If you have a Force Table with 3 forces in static equilibrium acting on a ring (with f1 at 2.00N and 0 degrees, f2 at 2.00N and120 degrees, and f3 at 2.27N and-150 degrees) and you add .30N to f2, can you regain static equilibrium by only increasing or decreasing the angle of f2?

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The forces $F_{1}, F_{2}, \dots, F_{n}$ acting at the same point P are said to be in equilibrium if the resultant force is zero, that is, if

F_{1} + F_{2} + \dots + F_{n} = 0

. Find (a) the resultant forces acting at P, and (b) the additional force required (if any) for the forces to be in equilibrium.

\begin{array}{l} F_{1} = 4 i - j, F_{2} = 3 i - 7 j, F_{3} = - 8 i + 3 j, F_{4} = i + j \end{array}

\begin{array}{l} F_{1} = 4 i - j, F_{2} = 3 i - 7 j, F_{3} = - 8 i + 3 j, F_{4} = i + j \end{array}

\begin{array}{l} F_{1} = 4 i - j, F_{2} = 3 i - 7 j, F_{3} = - 8 i + 3 j, F_{4} = i + j \end{array}

\begin{array}{l} F_{1} = 4 i - j, F_{2} = 3 i - 7 j, F_{3} = - 8 i + 3 j, F_{4} = i + j \end{array}

roselizard847

3) 4 ptsConsider a body with exactly two forces F1 and F2 acting on it. It is in static equilibrium - that is, its center of mass is not accelerating, nor is it rotating. What can you say about the two forces?

A uniform disk of mass m = 3.6 kg and radius R = 8 cm can rotate about an axle through its center. Four forces are acting on it as shown in the figure.

Their magnitudes are F₁ = 7.5 N, F₂ = 4.5 N, F₃ = 7.5 N and F₄ = 4.5 N. F₂ and F₄ act a distance d = 4.5 cm from the center of mass. These forces are all in the plane of the disk.

Part (c) Write an expression for the x-component P_x of the force exerted by the pivot in terms of T.

Part (d) What is the tension in the horizontal cable, in Newtons, if the mass of the beam is 38kg, the length of the beam is 13m and the angle is 37^o?

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Step 3: If you have a Force Table with 3 forces in static equilibrium acting on a ring (with f1 at 2.00N and 0 degrees, f2 at 2.00N and120 degrees, and f3 at 2.27N and-150 degrees) and you add .30N to f2, can you regain static equilibrium by only increasing or decreasing the angle of f2?

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Physics: Principles with Applications

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