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https:/www-awh aleks.com/alekscgi/lteve/lo u73-oudp2eqtVT3Kk-4s5-mWhtaYtaR-U39KaSCEAR2gW.rynzsätQHC3mRIghub)oka's. LTdM/w FotLabw70y MATH AND PHYSICS Understanding how electrostatic forces cancel Each sketch below shows three objects with an electric charge. In each case, decide whether there is a net force acting on the central object, which is larger and outlined in green. If there is a net force, decide whether it pushes the center abject to the left or right. Then select the appropriate button under the sketch. For example, if there is a net force pushing the central object in the first sketch to the left, select the left button under the first sketch. If there is no net force on the central object in the second sketch, select the middle button under the second sketch. And so on.Explanation / Answer
Ans 1 : The like charges repel each other , whereas unlike charges attract each other.
In the first picture , the middle object is positive (+3) and the object on left and right are both negative and of same magnitude , so equal attractive forces will be generated on the middle object. So the object will face no net force.
In the second picture the middle object has -2 charge and the object on left has -3 and on right has -2.
-3 charge will exert greater repulsive force on middle object , so it will move to right.
In the third picture , the middle object has -3 charge and both charges on the either side have -3 charge. Both of them exert same repulsive force on the middle object , so it will face no net force.
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