4 . We have learnt that centripetal acceleration fos a circular motion is given by a = WR = V2 R Use this fact to calculate the radius of curvature of the parabolic path at the max. height for a projectile launched with speed v and initial angle . Note this is the radius of a small part of the path near the highest position taken approximately to be a circular arc. Can you calculate the sadius of Curvature R as a function of horizontal distance a fes the projectile parabola y(2() ? You can directly use the parabolic trajectory expression we discussed in the lecture y(2 ) = tano x - g sec'0 2 2 2 v2 where v = initial speed 9 = launch angle