Question

A mass of $30 \,kg$ is suspended from a spring of spring constant $15\, N/m$. The time period of vertical oscillations of mass is

• A. $\frac{3\pi }{\sqrt{2}}s$
• B. $2\pi \sqrt{2}\,s$
• C. $\pi \sqrt{2}\,s$
• D. $2\sqrt{2}\,s$

Answer 1

Answer: (B)

$2\pi \sqrt{2}\,s$

Answer 2

For mass-spring system, time period $T=2\pi \sqrt{\frac{m}{k}}=2\pi \sqrt{\frac{30}{15}}$ $=2\pi \sqrt{2}$ second.