A projectile is fired with velocity u making angle θ with the horizontal. What is the angular momentum of the projectile at the highest point about the starting point ? Given that mass of the projectile is m

Maximum height, h=u2sin2⁡θ2gLinear momentum at highest point =mucos⁡θAngular momentum of the projectile at the highest point= linear momentum × perpendicular distance =mucos⁡θ×h=mucos⁡θ×u2sin2⁡θ/2g =mu3sin2⁡θcos⁡θ2g