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Three Rigid Rods Are Joined to Form an Equilateral Triangle Abc of Side 1 M. Three Particles Carrying Charges 20 μC Each Are Attached to the Vertices of the Triangle. the Whole System is - Physics

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MCQ

Three rigid rods are joined to form an equilateral triangle ABC of side 1 m. Three particles carrying charges 20 μC each are attached to the vertices of the triangle. The whole system is at rest in an inertial frame. The magnitude of the resultant force on the charged particle at A is.

Options

  • zero

  • 3.6 N

  • 3.6`sqrt3` N

  • 7.2 N

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Solution

zero
Using, Fnet = ma,
a = 0 ⇒ Fnet = 0
As the whole system is at rest, the resultant force on the charged particle at A is zero.

Concept: Newton's First Law of Motion
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APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 1
Chapter 5 Newton's Laws of Motion
MCQ | Q 8 | Page 77
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