Kater's Pendulum Vs Bar Pendulum

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In summary, Kater's Pendulum and Bar Pendulum are both types of pendulums used to measure the acceleration due to gravity. Kater's Pendulum is considered more accurate as it eliminates the effects of air resistance and friction, while Bar Pendulum is less complex and more suitable for rough measurements. Kater's Pendulum works by adjusting the pivot point to match the period of a simple pendulum, and the acceleration due to gravity can be calculated using the formula g = 4π²l/T².
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GabrielMoon
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I am not able to think which pendulum is more better.
Both are compound pendulums and i think kater's is better, but for what reasons, i am not sure.
Thank you in advance!
 
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  • #2
Surely you must have some reason you are aware of. Think about it. What are the differences in the two? What would make one better than the other?
 

1. What is the difference between Kater's Pendulum and Bar Pendulum?

Kater's Pendulum and Bar Pendulum are both types of pendulums used to measure the acceleration due to gravity. However, the main difference lies in their construction and the method of measurement. Kater's Pendulum uses a knife-edge suspension and a reversible pendulum while Bar Pendulum uses a rigid bar and a non-reversible pendulum.

2. Which pendulum is more accurate for measuring the acceleration due to gravity?

Kater's Pendulum is considered more accurate than Bar Pendulum because it eliminates the effect of air resistance and friction by using a knife-edge suspension and a reversible pendulum. This allows for more precise measurements of the acceleration due to gravity.

3. How does Kater's Pendulum work?

Kater's Pendulum works by suspending a pendulum with a knife-edge pivot that can be adjusted to be either on the center of gravity of the pendulum or offset from it. By adjusting the pivot point, the period of the pendulum can be matched with that of a simple pendulum, allowing for accurate measurement of the acceleration due to gravity.

4. What are the advantages of using Bar Pendulum?

Bar Pendulum is less complex and easier to construct compared to Kater's Pendulum. It also does not require precise adjustments of the pivot point, making it more suitable for rough measurements of the acceleration due to gravity.

5. How is the acceleration due to gravity calculated using Kater's Pendulum?

The acceleration due to gravity can be calculated using the formula g = 4π²l/T², where g is the acceleration due to gravity, l is the distance between the pivot point and the center of mass of the pendulum, and T is the period of the pendulum. By adjusting the pivot point and measuring the period, the acceleration due to gravity can be accurately calculated.

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