If two similar springs each of spring constant $K _{1}$ are joined in series, the new spring constant and time period would be changed by a factor
$\frac{1}{2}, \sqrt{2}$
$\frac{1}{4}, \sqrt{2}$
$\frac{1}{4}, 2 \sqrt{2}$
$\frac{1}{2}, 2 \sqrt{2}$
A uniform spring of force constant $k$ is cut into two pieces, the lengths of which are in the ratio $1 : 2$. The ratio of the force constants of the shorter and the longer pieces is
The effective spring constant of two spring system as shown in figure will be
If a spring has time period $T$, and is cut into $n$ equal parts, then the time period of each part will be
A $2\, Kg$ block moving with $10\, m/s$ strikes a spring of constant $\pi ^2 N/m$ attached to $2\, Kg$ block at rest kept on a smooth floor, the velocity of the rear $2\, kg$ block after it separates from the spring will be ..... $m/s$
What is the period of small oscillations of the block of mass $m$ if the springs are ideal and pulleys are massless ?