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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A system of coplanar forces acting on a rigid body can be reduced to

One force only
None of these
One couple only
One force and one couple only

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Applied Mechanics and Graphic Statics
A disc of mass 4 kg, radius 0.5 m and moment of inertia 3 kg.m² rolls on a horizontal surface so that its center moves with speed 5 m/see. Kinetic energy of the disc is

200 J
150 J
400 J
50 J

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Applied Mechanics and Graphic Statics
One end of a light string 4 m in length is fixed to a point on a smooth wall and the other end fastened to a point on the surface of a smooth sphere of diameter 2.25 m and of weight 100 kg. The tension in the string is

19.5 kg
17.5 kg
22.5 kg
25 kg

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Applied Mechanics and Graphic Statics
Maximum efficiency of a screw jack for the angle of friction θ, is

(1 + sin θ)/(1 - sin θ)
(1 - sin θ)/sin θ
sin θ/(1 + sin θ)
(1 - sin θ)/(1 + sin θ)

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Applied Mechanics and Graphic Statics
A solid cylinder of mass M and radius R rolls down an inclined plane without slipping. The acceleration of center of mass of rolling cylinder is (where ‘g’ is acceleration due to gravity and 0 is inclination of plane with horizontal.)

(1/3) g sinB
(2/3) g cos 9
(2/3) g sin 0
g sin 9

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Applied Mechanics and Graphic Statics
Angular acceleration of a particle may be expressed as

Radians/sec²
Degrees/sec²
All listed here
Revolutions/sec

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