statics

Related Questions

• If A, B ,C are three forces in equilibrium acting at a point and if ${{60}^{o}}$, ${{150}^{o}}$ and ${{150}^{o}}$respectively denote the angles between A and B, B and C and C and A, then the forces are in proportion of

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• A body is on the point of sliding down an inclined plane under its own weight. If the inclination of the plane to the horizon be ${{30}^{o}}$ , the angle of friction will be

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• A uniform rod AB of length a hangs with one end against a smooth vertical wall, being supported by a string of length l, attached to the other end of the rod and to a point of the rod vertically above B. If the rod rests inclined to the wall at an angle $\theta $, then ${{\cos }^{2}}\theta =$

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• A uniform beam of length 2a rests in equilibrium against a smooth vertical plane and over a smooth peg at a distance h from the plane. If $\theta$ be the inclination of the beam to the vertical, then $\sin 3\theta$ is

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• Let R be the resultant of P and Q and if $\frac{P}{3}=\frac{Q}{7}=\frac{R}{5}$, then the angle between P and R is

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