A spring of natural length `80cm` with a load has a length of `100cm`. If it is slightly pulled down and released its period will be

One end of a long metallic wire of length L, area of cross-section A and Young's modulus Y is tied to the ceiling. The other end is tied to a massless spring of force constant k and a mass m is hung from the free end of the spring. If m is slightly pulled down and released, then its time period of oscillation is

A vertical spring stretched by weight of 20gm elongates by 2 cm. It is further pulled down by 2 cm and released. Calculate amplitude and period of oscillations produced.

A light string of length 20 cm is carrying a bob of mas 100 gm. If is pulled through an angle 60^(@) and released. Its maximum velcoity is

Certain weight is attached with a spring. It is pulled down and then released. It oscillates up and down. Its K.E. will be

When a mass m is hung on a spring, the spring stretched by 6 cm. If the loaded spring is pulled downward a little and released, then the period of vibration of the system will be

When a weight of 2kg is suspended from a spring, its length increases by 3 cm. If the weight is further pulled down by 12 cm and then released, it executes S.H.M. What will be the period of oscillation of the arrangement ? Also calculate the potential energy of the spring .