Newton’s Laws of Motion — Physics STD 12 Science — Question

Figure shows a heavy block kept on a frictionless surface and being pulled by two ropes of equal mass m. At t = 0, the force on the left rope is withdrawn but the
force on the right end continues to act. Let F₁ and F₂ be the magnitudes of the forces by the right rope and the left rope on the block respectively:

1. F₁ = F₂ = F for t < 0.
2. F₁ = F₂ = F + mg for t < 0.
3. F₁ = F, F₂ = F for t > 0.
4. F₁< F, F₂ = F for t > 0.