A non-conducting disk of radius a and uniform positive surface charge density is placed on the ground, with its axis vertical. A particle of mass m and positive charge q is dropped, along the axis of the disk, from a height H with zero initial velocity. The particle has q/m= ; 808/0. a. Find the value of H if the particle just reaches the disk. b. Sketch the potential energy of the particle as a function of its height and find its equilibrium position.
A non-conducting disk of radius a and uniform positive surface charge density is placed on the ground, with its axis vertical. A particle of mass m and positive charge q is dropped, along the axis of the disk, from a height H with zero initial velocity. The particle has q/m= ; 808/0. a. Find the value of H if the particle just reaches the disk. b. Sketch the potential energy of the particle as a function of its height and find its equilibrium position.
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Transcribed Image Text:A non-conducting disk of radius a and
uniform positive surface charge density □ is placed on the
ground, with its axis vertical. A particle of mass m and
positive charge q is dropped, along the axis of the disk,
from a height H with zero initial velocity. The particle has
q/m = sog/o.
a. Find the value of H if the particle just reaches the disk.
b. Sketch the potential energy of the particle as a function
of its height and find its equilibrium position.
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