Circular
Parabolic
Elliptical
Catenary

Applied Mechanics and Graphic Statics Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis?

Disc with larger density
Both discs will have same rotational inertia
None of these
Disc with smaller density

0.33
0.67
0.44
0.57

b⁴/3
b⁴/8
b³/4
b⁴/12

Applied Mechanics and Graphic Statics One end of an elastic string of natural length / and modulus X is kept fixed while to the other end is attached a particle of mass m which is hanging freely under gravity. The particle is pulled down vertically through a distance x, held at rest and then released. The motion is

None of these
a damped oscillatory motion
a simple harmonic motion
a rectilinear motion with constant speed

Applied Mechanics and Graphic Statics The centre of gravity of a homogeneous body is the point at which the whole

Weight of the body is assumed to be concentrated
All listed here
Volume of the body is assumed to be concentrated
Area of the surface of the body is assumed to be concentrated