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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called

Negative work
Virtual work
Zero work
Imaginary work

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Applied Mechanics and Graphic Statics
The mechanical advantage of an ideal machine is 100. For moving the local through 2 m, the effort moves through

2.5 m
0.02 m
2 m
20 m

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Applied Mechanics and Graphic Statics
A sphere is resting on two planes BA and BC which are inclined at 45° and 60° respectively with the horizontal. The reaction on the plane BA will be

Less than that on BC
None of these
Equal to that on BC
More than that of BC

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Applied Mechanics and Graphic Statics
A shell travelling with a horizontal velocity of 100 m/sec explodes and splits into two parts, one of mass 10 kg and the other of 15 kg. The 15 kg mass drops vertically downward with initial velocity of 100 m/sec and the 10 kg mass begins to travel at an angle to the horizontal of tan”1 x, where x is

43894
43895
43926
43954

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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 wall ii. 1.732 m from the wall iii. 1.0 m above the floor iv. 1.732 m above the floor The correct answer is

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

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Applied Mechanics and Graphic Statics
From a solid cylinder of height 8 cm and radius 4 cm, a right circular cone is scooped out on the same base and having the same height as that of the cylinder. The C.G. of the remainder is at a height of

4.5 cm
5.0 cm
5.5 cm
5.25 cm

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