The figure represents the Calvin cycle.
A represents carboxylation (\(CO_2\) fixation).
B represents reduction (using ATP and NADPH).
C represents regeneration of RuBP.
A bob of heavy mass \(m\) is suspended by a light string of length \(l\). The bob is given a horizontal velocity \(v_0\) as shown in figure. If the string gets slack at some point P making an angle \( \theta \) from the horizontal, the ratio of the speed \(v\) of the bob at point P to its initial speed \(v_0\) is :