SHM -2

Classical Mechanics Level 3

What is the time period of a pendulum of infinite length?

Answer in Minutes.


The answer is 86.

Mehul Arora by Mehul Arora , 20, India

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1 solution

Kshitij Alwadhi
Mar 3, 2016

In case of a very long pendulum,

Time period is said to be 2 π ( 1 R + 1 l ) g \frac { 2\pi }{ \sqrt { \left( \frac { 1 }{ R } +\frac { 1 }{ l } \right) g } }

2 π ( 1 R + 1 ∞ ) g \frac { 2\pi }{ \sqrt { \left( \frac { 1 }{ R } +\frac { 1 }{ \infty } \right) g } }

2 π R g 2\pi \sqrt { \frac { R }{ g } }

Solving this gives 86 minutes .

Hope this helps :)

3 Helpful 0 Interesting 0 Brilliant 1 Confused

The exact answer is 84.6 minutes not 86 minutes.

A Former Brilliant Member - 2 years, 6 months ago

Yes I entered 84.6 and 85 and 84 but it is still showing that I was wrong. Please anyone resolve this issue

Debarghya Adhikari - 2 years ago

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