Question

A ring whose diameter is 1 meter, oscillates simple harmonically in a vertical plane about a nail fixed at its circumference. The time period will be

• A.
• B. $1 / 2 \mathrm { sec }$
• C. 1 sec
• D. 2 sec

Answer 1

Answer: (D)

2 sec

Answer 2

$T = 2 \pi \sqrt { \frac { 2 R } { g } }$ $= 2 \pi \sqrt { \frac { 1 } { g } }$= 2 sec

[As diameter $2 R = 1$ meter given]