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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A block of weight 50 kg is placed on a horizontal plane. When a horizontal force of 18 kg is applied, the block is just on the point of motion. The angle of friction is

18° 48'
19° 48'
20° 48'
17° 48'

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Applied Mechanics and Graphic Statics
Power developed by a torque, is

2πNT /60 watts
2πNT kg m/min
2πNT/4500 h.p
All listed here

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Applied Mechanics and Graphic Statics
A stone of mass 1 kg is tied to a string of length 1 m and whirled in a horizontal circle at a constant angular speed 5 rad/sec. The tension in the string is,

5 N
15 N
10 N
25 N

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Applied Mechanics and Graphic Statics
If two forces are in equilibrium, then the forces must (i) Be equal in magnitude (ii) Be opposite in sense (iii) Act along the same line

(i) and (iii)
All (i), (ii) and (iii)
Only (i)
(i) and (ii)

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Applied Mechanics and Graphic Statics
The centre of gravity of the trapezium as shown in below figure from the side is at a distance of Applied Mechanics and Graphic Statics mcq question image

(h/2) × [(b + 2a)/(b + a)]
(h/3) × [(b + 2a)/(b + a)]
(h/2) × [(2b + a)/(b + a)]
(h/3) × [(2b + a)/(b + a)]

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Applied Mechanics and Graphic Statics
A rigid body is in a stable equilibrium if the application of any force

None of above
Neither raises nor lowers the CG of the body
Tends to lower the CG of the body
Can raise the CG of the body but cannot lower it

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