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

## Applied Mechanics and Graphic Statics A cable loaded with 10 kN/m of span is stretched between supports in the same horizontal line 100 m apart. If the central dip is 10 m, then the maximum and minimum pull in the cable respectively are

1436.2 kN and 1250 kN
1436.2 kN and 1500 kN
1346.3 kN and 1500 kN
1346.3 kN and 1250 kN

## Applied Mechanics and Graphic Statics The following is in unstable equilibrium

A uniform solid cone resting on its base on a horizontal plane
A solid cube resting on one edge
A satellite encircling the earth
A uniform solid cone resting on a generator on a smooth horizontal plane

Equilibrium
Bending moment
Shear force
Resultant force

wl²/4d
wl/4d
wl²/16d
wl²/8d

## Applied Mechanics and Graphic Statics If A is the amplitude of particle executing simple harmonic motion, then the total energy E of the particle is

Proportional to A²
Proportional to A
Proportional to 1/A²
Independent of A