Question

the resultant of a system of forces acting at a point O in the figure is​

Answer 1

Answer:

Dimensional Formula of Resistance

The dimensional formula of resistance is given by,

M1 L2 T-3 I-2

Answer 2

Answer:

The resultant force is  $0$ $N$.

Explanation:

• The resultant of forces at a particular point is calculated by taking the vertical and horizontal components of all forces.
• If the point is at equilibrium, then the net values of horizontal and vertical components are zero.

The formula used for resultant force:

$R=\sqrt{F_{x} ^{2}+F_{y} ^{2} }$

where $F_{x}$ is force horizontal component

            $F_{y}$ is force vertical component.

Step 1:

Net force in the horizontal direction $={1*cos30^{0} -\sqrt{3} cos60^{0}}$  $N$

                                                            $={1*\frac{\sqrt{3} }{2} } -\sqrt{3}* \frac{1}{2}$  $N$

                                                             $= 0$ $N$

Step 2:

Net Force in the vertical direction $=1*sin30^{0} +\sqrt{3} *sin60^{0} + 1 - 3$ $N$

                                                        $= \frac{1}{2} +\sqrt{3} *\frac{\sqrt{3} }{2} + 1 - 3$  $N$

                                                        $= 0$ $N$

So, the resultant force is $0$ $N$.