statics

Related Questions

• A heavy uniform rod, 15cm long, is suspended from a fixed point by strings fastened to its ends, their lengths being 9 and 12 cm. If $\theta$ be the angle at which the rod is inclined to the vertical, then $\sin \theta =$

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• In a right angle $\Delta ABC,$$\angle A={{90}^{o}}$and sides a, b, c are respectively 5 cm, 4 cm and 3 cm. If a force $\overrightarrow{F}$ has moments 0, 9 and 16 in N-cm respectively about vertices A, B and C, then magnitude of $\overrightarrow{F}$is

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• If the angle $\alpha $ between two forces of equal magnitude is reduced to $\alpha -\frac{\pi }{3}$, then the magnitude of their resultant becomes $\sqrt{3}$times of the earlier one. The angle $\alpha $is

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• Forces of magnitudes 5, 10, 15 and 20 Newton act on a particle in the directions of North, South, East and West respectively. The magnitude of their resultant is

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• The centre of gravity of the surface of a hollow cone lies on the axis and divides it in the ratio

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