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The period of a pendulum is approximated by the equation T = 2 pi square-root (L / g). Note: This is only an approximation, applicable only for very small angles of swing. At larger angles, a circular error is introduced, but the basic equation still holds true.

Looking at that equation, you see that time is proportional to the square root of the length of the pendulum, so to double the period of a pendulum you need to increase its length by a factor of four.

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Q: If you want to double the period of a pendulum by how much do you need to change the length?
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Related questions

How does the period of a pendulum change for length?

A longer pendulum has a longer period. A more massive pendulum has a longer period.


When the length of a pendulum increases what will it effect on the time period?

The period is proportional to the square root of the length so if you quadruple the length, the period will double.


Does the weight effect the period of a pendulum?

It doesn't. Period depends on the length of the pendulum and the acceleration of gravity. Adding weight doesn't change the period at all.


What effect does shortening the length of the pendulum have on the period of the pendulum?

A shorter pendulum has a shorter period. A longer pendulum has a longer period.


How does length effect the period of a pendulum?

A longer pendulum has a longer period.


What is the length of a pendulum with a period of 1.49 s?

pendulum length (L)=1.8081061073513foot pendulum length (L)=0.55111074152067meter


In simple pendulum if string is flexible then what is effect on time period?

multiply the length of the pendulum by 4, the period doubles. the period is proportional to the square of the pendulum length.


How can you increase the period of a pendulum?

Increase the length of the pendulum


How does the period of a pendulum difference theoretically with length for simple pendulum?

The period is directly proportional to the square root of the length.


What does the period of a pendulum depend on?

The length of the pendulum and the gravitational pull.


Does the length of pendulum affect the period of vibration?

Yes. Given a constant for gravity, the period of the pendulum is a function of it's length to the center of mass. In a higher gravity, the period would be shorter for the same length of pendulum.


How must the length of a pendulum be changed to double it's period?

The formula for the frequency of the pendulum is w2=g/l if you wish to double your period w1, you want to have w2 = 2*w1 The needed length of the pendulum is then l2 = g / w22 = g /(4 * w12) = 0.25 * g / w12 = 0.25 * l1 l2 / l1 = 1/4 You must shorten the length of the pendulum to 1/4 of its former size.