Neutral
Stable
Unstable
None of these

(5/7) g sin0
(1/3) g sin0
(2/5) g sin 0
(3/7) g sin 0

π/32 (D⁴ × d⁴)
π/32 (D⁴ + d⁴)
π/64 (D⁴ + d⁴)
π/32 (D⁴ - d⁴)

## Applied Mechanics and Graphic Statics One end of an elastic string of natural length ‘l’ 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

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

## Applied Mechanics and Graphic Statics A satellite is said to move in a synchronous orbit if it moves at an altitude of 36,000 km with a maximum velocity of about

9000 km per hour
11,000 km per hour
8000 km per hour
7000 km per hour

## Applied Mechanics and Graphic Statics The force acting on a point on the surface of a rigid body may be considered to act

At any point on the surface normal to the line of action of the force
At the centre of gravity of the body
On the periphery of the body
On any point on the line of action of the force