A small object is connected to a lightweight cord of length L=1.80 m that is tied to a point P, as shown in the figure. The object, string, and point all lie on a frictionless, horizontal table. The object has a mass m=0.0100 kg, a charge q=+1.60 µC and is released from rest when the string makes an angle 0 = 70.0° with a unifomm electric field of magnitude E= 260 V/m.
A small object is connected to a lightweight cord of length L=1.80 m that is tied to a point P, as shown in the figure. The object, string, and point all lie on a frictionless, horizontal table. The object has a mass m=0.0100 kg, a charge q=+1.60 µC and is released from rest when the string makes an angle 0 = 70.0° with a unifomm electric field of magnitude E= 260 V/m.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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
Transcribed Image Text:A small object is connectedto a
lightweight cord oflength L=1.80 m
that is tied to a point P, as shown in the
figure. The object, string, and point all lie
on a frictionless, horizontaltable. The
v = 0
L
object has a mass m=0.0100 kg, a charge
q=+1.60 µC and is released from rest
when the string makes an angle 0 = 70.0°
with a unifom electric field of magnitude
Тоp view
E= 260 V/m.
a) Calculate the work done by the gravitational force, the nomal force and the
tension in therope
b) Calculate the change in the electric potential between the initial and starting
positions
c) Use “Energy methods for a non-isolated system to detemine the speed (in
m/s) of the object when the string is parallel to the electric field.
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