The length of a string increased by $20 \mathrm{cm}$  when a $1 \mathrm{kg}$ body is suspended from it Determine the force constant of the spring. If the body is pulled on slightly and then release what will be the period of oscillations. If the body along with spring execute SHM on a friction less horizontal surface, what will be its time period?

The force constant of a weightless spring is $16 \mathrm{N}/\mathrm{m}$. A body of mass $1.0 \mathrm{kg}$ is suspended from it is pulled down through $5 cm$ & then released. Determine the period of oscillation of the body

Two bodies P of mass $2 \mathrm{kg}$  and Q of $1 \mathrm{kg}$ Are rigidly connected by a spring of force constant  $200 {\mathrm{Nm}}^{-1}$. From the rest position the body P is compressed by $2 \mathrm{cm}$ downwards. Determine the frequency of P and the energy of oscillation.

The period of oscillation of a mass $\mathrm{m}$  suspended by an ideal spring is $2 \mathrm{s}$. If an additional mass of $2 \mathrm{kg}$ be suspended, the time period is increased by $1 \mathrm{s}$ Find the value of $m$.

$10 \mathrm{kg}$ body is suspended from an ideal spring (force constant $250 {\mathrm{Nm}}^{-1}$. Calculate the time period of the body