How can the accuracy of a pendulum experiment be improved?

Improve the accuracy of a measurement of periodic time by: making timings by sighting the bob past a fixed reference point (called a fiducial point ) sighting the bob as it moves fastest past a reference point. The pendulum swings fastest at its lowest point and slowest at the top of each swing.

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One may also ask why should amplitude of pendulum be small?

If it is a pendulum, amplitude must be small because the "time period does not depend on amplitude" rule applies to pendulums only if it is exhibiting simple harmonic motion. So, when amplitude is kept small (allowing use of the sin?=? approximation), time period is independent of amplitude. Why is Kater pendulum more accurate? The point of suspension also is not accurately determined in a simple pendulum. So once a near equality in time period is obtained on both sides of the centre of gravity of the metallic bar, determining the length of the pendulum becomes more accurate, and so does determining the acceleration g due to gravity.

Which pendulum is more accurate?

Treating a pendulum as a compound pendulum for calculations is more difficult, but it yields more accurate predictions because the simple pendulum model is idealized. Every physical pendulum is in reality a compound pendulum, because the rod is never massless. Then, will pendulums synchronize? The researchers calculated that, as pendulums move back and forth, sound pulses could travel through the wall from clock to clock. These pulses can interfere with the swings of the pendulums, eventually causing them to synchronize.

Keeping this in consideration, what causes a pendulum to eventually slow down and stop swinging?

A pendulum is an object hung from a fixed point that swings back and forth under the action of gravity. The swing continues moving back and forth without any extra outside help until friction (between the air and the swing and between the chains and the attachment points) slows it down and eventually stops it. Why mass does not affect pendulum? The reason the simple pendulum has no dependence on mass is because the mass gets to "count" for two different things. (The same thing happens in freefall motion, where all things of all weights fall at the same rate.) For a mass-spring system, the mass still affects the inertia, but it does not cause the force.