Three 1.0-C charged objects are equally spaced on a straight line. The separatio

Question

Three 1.0-C charged objects are equally spaced on a straight line. The separation of each object from its neighbor is 170m .

Part A

Find the force exerted on the center object if all charges are positive.

Express your answer to two significant figures and include the appropriate units.

Part B

Find the force exerted on the center object if all charges are negative.

Express your answer to two significant figures and include the appropriate units.

Part C

Find the force exerted on the center object if the rightmost charge is negative and the other two are positive.

Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

A)

as all the charges are positive ,

the force on middle charge due to both corner charges is equal and oposite in direction.

The net force is ZERO

B)

as all the charges are negative .

the force on middle charge due to both corner charges is equal and oposite in direction.

The net force is ZERO.

C)

Now, force on middle charge due to one charge

F1 = k*q1*q2/d^2

F1 = 9*10^9 * 1 * 1 /170^2

F1 = 3.114 *10^5 N

Now, as the force due to both charges is in same direction.

Fq = 2*F1

Fq = 2 * 3.114 *10^5

Fq = 6.228 *10^5 N

the net force on q is 6.2 *10^5 N

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