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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
In SI units, the units of force and energy are respectively

Newton and joule
Newton and watt
kg wt and joule
Dyne and erg

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Applied Mechanics and Graphic Statics
A force P of 50 N and another force Q of unknown magnitude act at 90° to each other. They are balanced by a force of 130 N. The magnitude of Q is

120 N
100 N
80 N
60 N

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Applied Mechanics and Graphic Statics
The height at which the end of a rope of length ‘l’ should be tied so that a man pulling at the other end may have the greatest tendency to overturn the pillar, is

l/√2
½ l
¾ l
2/√3 l

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Applied Mechanics and Graphic Statics
If two bodies of masses M1 and M2(M1 > M2) are connected by alight inextensible string passing over a smooth pulley, the tension in the string, will be given by

T = g(M1 - M2)/(M1 + M2)
T = g(M2 + M1)/(M2 - M1)
T = g(M1 + M2)/(M1 × M2)
T = g(M2 - M1)/(M1 + M2)

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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

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

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Applied Mechanics and Graphic Statics
For maximum range of a projectile, the angle of projection should be

30°
None of these
45°
60°

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