Applied Mechanics and Graphic Statics
To double the period of oscillation of a simple pendulum

Its length should be doubled
The mass of its bob should be quadrupled
Its length should be quadrupled
The mass of its bob should be doubled

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

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