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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
Two forces of 6 Newtons and 8 Newtons which are acting at right angles to each other, will have a resultant of

10 Newtons
8 Newtons
12 Newtons
5 Newtons

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Applied Mechanics and Graphic Statics
The gravitational force makes a satellite go round the earth in a circular orbit, if it is projected with an initial velocity of

All listed here
11.26 km/sec, the satellite escapes the pull of the earth
8.04 km/sec at a height of 285 km
11.11 km/sec at a height of 37,400 km

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

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Applied Mechanics and Graphic Statics
A satellite goes on moving along its orbit round the earth due to

Centripetal force
None of these
Gravitational force
Centrifugal force

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Applied Mechanics and Graphic Statics
A shell of mass 100 kg travelling with a velocity of 10 m/sec breaks into two equal pieces during an explosion which provides an extra kinetic energy of 20000 Joules. If the pieces continue to move in the same direction as before, then the speed of the faster one must be

20 m/sec
40 m/sec
50 m/sec
30 m/sec

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Applied Mechanics and Graphic Statics
The ends of a string weighing w/metre are attached to two points at the same horizontal level. If the central dip is very small, the horizontal tension of the string throughout is

wl²/8d
wl²/16d
wl²/4d
wl/4d

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