The forces F1,F2,…,FnF1,F2,…,Fn acting at the same point P are said to be in equilibrium if the resultant force is zero, that is, if F1+F2+…+Fn=0F1+F2+…+Fn=0 . Find (a) the resultant forces acting at P, and (b) the additional force required (if any) for the forces to be in equilibrium. F1=4 i− j, F2=3 i−7 j, F3=−8 i+3 j, F4=i+j

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roselizard847Lv1

6 Oct 2020

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.

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

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

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

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

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Supratim PalLv10

8 Jan 2021

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a) What is the net force in component form, in terms of F1, F2, F3, and the unit vectors i and j
b) What is the magnitude of the net force, in newtons?
c) What is the angle Î¸, in degrees, of the net force, measured from the +x-axis? Enter an angle between -180Â° and 180Â°.
d) What is the magnitude, |a| of the acceleration, in meters per square second, if the block has a mass of 6.9 kg?

cyanhound711

Two forces F₁ and F₂ act along the two sides of an equilateral triangle as shown in Figure P11.9. Point O is the intersection of the altitudes of the triangle. Find a third force F₃ to be applied at B and along BC that will make the total torque zero about the point O. What If? Will the total torque change if F₃ is applied not at B but at any other point along BC?

amberleopard338

Three blocks are stacked on top of each other inside an elevator as shown in the figure. Answer the question with reference to the eight forces defined as follows:

1. the force of the 3 kg block on the 2 kg block, F₃ on 2.

2. the force of the 2 kg block on the 3 kg block, F₂ on 3.

3. the force of the 3 kg block on the 1 kg block, F₃ on 1.

4. the force of the 1 kg block on the 3 kg block, F₁ on 3.

5. the force of the 2 kg block on the 1 kg block, F₂ on 1.

6. the force of the 1 kg block on the 2 kg block, F₁ on 2.

7. the force of the 1 kg block on the floor, F₁ on the floor, and

8. the force of the floor on the 1 kg block, F_floor on 1.