1.
The resultant of two equal forces P making an angle $$\theta ,$$ is given by

3.
If a number of forces are acting at a point, their resultant is given by

4.
The linear acceleration (a) of a body rotating along a circular path of radius (r) with an angular acceleration of $$\alpha $$ rad/s2, is

5.
Moment of inertia of a circular section about an axis perpendicular to the section is

6.
According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through center of gravity (i.e. $${I_{\text{P}}}$$) is given by (where, A = Area of the section, $${I_{\text{G}}}$$ = Moment of inertia of the section about an axis passing through its C.G. and h = Distance between C.G. and the parallel axis.)

10.
For any system of coplanar forces, the condition of equilibrium is that the

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