Problem $2$:

An infinite nonconducting sheet has a surface charge density $=0\mathrm{.}10\frac{C}{m^2}.$ How far apart are

equipotential surfaces whose potentials differ by $50$ V $?$

Concept $1-$ Identify correct moment arms

Instructions: for problems P$1-$P$2,$ write out the Cartesian components of the most efficient moment arm

vector that you would use the calculate the moment generated by the specified force.

$[$P$1]$ The cable $AB$ carries a tension of $400$ N $.$ Determine the moment about point $O$ produced by the

tension in the cable acting at point $A.($determine the moment arm only$)$

Concept $1-$ Identify correct moment arms

Instructions: for problems P$1-$P$2,$ write out the Cartesian components of the most efficient moment arm

vector that you would use the calculate the moment generated by the specified force.

$[$P$1]$ The cable $AB$ carries a tension of $400$ N $.$ Determine the moment about point $O$ produced by the

tension in the cable acting at point $A.($determine the moment arm only$)$