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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
Engineer's units of force, is

Newton and dyne in absolute units
Dyne in absolute units
Newton in absolute units
All listed here

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Applied Mechanics and Graphic Statics
A 2 m long ladder rests against a wall and makes an angle of 30° with the horizontal floor. Where will be the instantaneous center of rotation when the ladder starts slipping ?i. 1.0 in from the wallii. 1.732 m from the walliii. 1.0 m above the flooriv. 1.732 m above the floorThe correct answer is

(i) and (iii)
(i) and (iv)
(ii) and (iii)
(ii) and (iv)

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Applied Mechanics and Graphic Statics
One Newton force, is

10⁴ dynes
10³ dynes
10⁶ dynes
10⁵ dynes

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Applied Mechanics and Graphic Statics
Two objects moving with uniform speeds are 5 m apart after 1 second when they move towards each other and are 1 m apart when they move in the same direction. The speeds of the objects are:

2 m/sec and 2 m/sec
3 m/sec and 2 m/sec
3 m/sec and 3 m/sec
4 m/sec and 6 m/sec

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Applied Mechanics and Graphic Statics
If a particle moves with a uniform angular velocity ‘ω’ radians/sec along the circumference of a circle of radius ‘r’, the equation for the velocity of the particle, is

y = ω √(y - r)
v = ω √(r² + y²)
v = ω √(r² - y²)
v = ω √(y² - r²)

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Applied Mechanics and Graphic Statics
The condition of equilibrium for any system of forces in a plane is

None of these
That resultant couple must be zero
That polygon of forces must close
Both (A) and (B)

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