386.
The length of a second's pendulum is

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387. The slope on the road surface generally provided on the curves is known as

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388. The moment of inertia of a rectangular section 3cm wide and 4cm deep about X-X axis is

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389. A pendulum which executes one beat per second is known as

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390. The forces, whose lines of action are parallel to each other and act in the same directions, are known as

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391. A number of forces acting at a point will be in equilibrium, if

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392. The unit of moment of inertia of an area is

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