Each infinittesimal portion of the string is a linie segment which is moving perpendicular to its motion. According to SR the length of the string will remain unchanged.anantchowdhary said:When a pendulum is moving
will the length of the string that the bob is attached to appear to be contracted?I have this doubt as the string is sometimes in direction of motion and at one point absolutely not in the direction of motion
That's the usual way. Another way is to to have a charged particle on a string at a fixed distance from a charged plate. But you're right, he was probaby speaking of in a grav-field or in a rocket shift.Doc Al said:I assume that the OP meant that the swinging pendulum was in a moving rocket (say) being observed from the earth.
Doc Al said:I assume that the OP meant that the swinging pendulum was in a moving rocket (say) being observed from the earth.
A pendulum is a simple device consisting of a weight suspended from a pivot point that is able to swing back and forth. The motion of a pendulum is governed by the principles of gravity and inertia. When the weight is pulled to one side and released, it will swing back and forth in a regular pattern, known as its period. This motion can continue indefinitely as long as there is no external force acting on the pendulum.
The length of a pendulum string has a direct effect on its motion. According to the laws of physics, the longer the pendulum string, the longer the period of its swing. This means that a longer pendulum string will take more time to complete one swing than a shorter pendulum string. This relationship is known as the "pendulum length effect."
In addition to the length of the pendulum string, there are other factors that can affect its motion. These include the weight of the pendulum, the angle at which it is released, and the air resistance it encounters. These factors can influence the period and amplitude of the pendulum's swing, making its motion more complex.
The length of a pendulum string is typically measured from the pivot point to the center of the weight. It is important to measure from the center of the weight rather than the bottom or top of the weight, as this can affect the accuracy of the measurement. The length can be measured using a ruler or measuring tape.
The length of a pendulum string is inversely proportional to its frequency. This means that as the length of the pendulum string increases, the frequency decreases, and vice versa. This relationship is described by the equation: frequency = 1/period. Therefore, as the length increases, the period of the pendulum's swing also increases, resulting in a lower frequency.