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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
One Newton is equivalent to

981 dyne
9.81 kg. wt
1/9.81 kg. wt
1 kg. wt

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Applied Mechanics and Graphic Statics
The resultant of two forces ‘P’ and ‘Q’ acting at an angle ‘θ’, is

√(P² + Q² + 2PQ cos θ)
P² + Q² + 2P sin θ
P² + Q² + 2PQ tan θ
P² + Q² + 2PQ cos θ

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Applied Mechanics and Graphic Statics
A stone was thrown vertically upwards from the ground with a velocity of 50 m/sec. After 5 seconds another stone was thrown vertically upwards from the same place. If both the stones strike the ground at the same time, then the velocity with which the second stone was thrown should be (Assume g = 10 m/sec²)

15 m/sec
40 m/sec
25 m/sec
50 m/sec

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Applied Mechanics and Graphic Statics
A rod AB carries three loads of 30 N, 70 N and 100 N at distances of 20 mm, 90 mm and 150 mm respectively from A. Neglecting the weight of the rod, the point at which the rod will balance is

109.5 mm from A
125.5 mm from A
132.5 mm from A
119.5 mm from A

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Applied Mechanics and Graphic Statics
The C.G. of a right circular cone lies on its axis of symmetry at a height of

h/5
h/2
h/4
h/3

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Applied Mechanics and Graphic Statics
For lifting a load of 50 kg through a distance of 2.5 cm, an effort of 12.5 kg is moved through a distance of 40 cm. The efficiency of the lifting machine, is

0.6
0.75
0.7
0.65

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