A charge is kept fixed at point A as shown in the figure in a gravity free space. A semicircular ring of linear charge density λ, mass m and radius R is released from rest. Initially centre of semicircular ring coincides with the fixed charge. The initial acceleration of the semicircular ring is :-

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G1 Physics · Accepted Answer

Step 1: Convert the density to charge using dq = ρ dV, dq = λ dl, or dq = σ dA as appropriate. Step 2: Integrate over the stated region and then use Coulomb's law/Gauss's law for the field or flux. Step 3: Apply the given radius/position limits and simplify. Final: Option A. In this specific setup, apply the calculation to: A charge is kept fixed at point A as shown in the figure in a gravity free space. A semicircular ring of.