What determines the period of a pendulum?
2 answers:
The length of the pendulum and the acceleration of gravity determine the period of a pendulum.
<u>Explanation: </u>
We all are familiar with the pendulum and its motion. The way it swings from its rest position to the left and right ends with specific amplitude.
A pendulum can be simply defined as an object hung of a static point with a bob connected to it through a string.
When the bob is raised to the either direction from its rest position, it swings back and forth because of the acceleration (g). A complete back and forth swing of a bob from its rest position in the pendulum is counted as one complete period of a pendulum.
This primarily depends on length and acceleration. For simple pendulums, formula to evaluate its period is,
Where,
L- length of the string from the static suspension point to the bob in the pendulum
g- Acceleration due to gravity = 9.8
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Answer:
Number of electrons are flowing per second is 2.42 x 10¹⁹
Explanation:
The electric current flows through a wire is given by the relation :
....(1)
Here I is current, e is electronic charge, v is drift velocity of electrons and A is the Area of the wire.
But electric current is also define as rate of electrons passing through junction times their charge, i.e. ,
....(2)
Here N is the rate of electrons passing through junction.
From equation (1) and (2).
But area of wire,
Here d is diameter of wire.
So,
Substitute 2.91 x 10⁻³ m for d, 0.000191 m/s for v and 6 x 10²⁸ m⁻³ for n in the above equation.
N = 2.42 x 10¹⁹ s⁻¹