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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
The resultant of two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then,

None of these
Q = R
P = R
P = Q

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Applied Mechanics and Graphic Statics
A retarding force on a body does not

Change the motion of the body
Introduce the motion of the body
Retard the motion of the body
None of these

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Applied Mechanics and Graphic Statics
A particle is executing simple harmonic motion in a line 1.0 m long. If the time of one complete vibration is 1 sec, then the maximum velocity of the particle is

6.28 m/sec
3.14 m/sec
1.00 m/sec
1.57 m/sec

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Applied Mechanics and Graphic Statics
A projectile is thrown at an angle ‘α’ to the horizontal with velocity ‘v’. It will have the maximum centripetal acceleration

As it strikes the ground
At the top of the trajectory
Elsewhere
At the start

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Applied Mechanics and Graphic Statics
The velocity ratio of an inclined plane of inclination ‘θ’ with horizontal for lifting a load is

cos θ
tan θ
cosec θ
sin θ

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Applied Mechanics and Graphic Statics
The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 meters. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is

10.88 m/sec
5.88 m/sec
12.88 m/sec
8.88 m/sec

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