A uniformly charged rod of length L and uniform charge per unit length lambda lies along the x axis. Find the horizontal and vertical components of the electric field at the point P on the y axis that
is a distance d from the origin.
What are the approximate values of the E field components when d>>L?

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the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.