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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
The resultant of two forces acting at right angles is 5 kgf and if they act at an angle of 60°, it is 37 kgf. The magnitudes of the forces are:

4 kgf, 5 kgf
5 kgf, 3 kgf
2 kgf, 3 kgf
3 kgf, 4 kgf

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Applied Mechanics and Graphic Statics
A symmetrical body is rotating about its axis of symmetry, its moment of inertia about the axis of rotation being 2 kg -m2 and its rate of rotation 2 revolutions/see. The angular momentum of the body in kg-m2/sec is

6 7i
4
8
8TC

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Applied Mechanics and Graphic Statics
At the instantaneous center, the velocity of the moving lamina at any instant is

Zero
Varying
Maximum
Minimum

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Applied Mechanics and Graphic Statics
The centre of gravity of a trapezoidal dam section whose top width is a, bottom width is band the vertical side is a, from its vertical face is

(a² + ab + b²)/3 (a + b)
None of these
(b² + bc + c²)/3 (b + c)
(a² + ab + c²)/3 (a + c)

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Applied Mechanics and Graphic Statics
The unit of rotational inertia of a body in C.G.S system is

gm.cm3
gm.cm²
kg.cm²
cm⁴

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Applied Mechanics and Graphic Statics
From the circular plate of a diameter 6 cm is cut out a circular plate whose diameter is equal to radius of the plate. The C.G. of the remainder shifts from the original position through

0.25 cm
0.75 cm
0.50 cm
1.00 cm

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