Question

What will be the effect on maximum height of a projectile when its angle of projection is changed from 30o to 60o, keeping the same initial velocity of projection?

CLASS - XI PHYSICS (Kinematics)

Answer 1

maximum height = $\frac{ u^{2} sin^{2} \alpha }{2g}$

for α=30,

maximum height = $\frac{ u^{2} sin^{2}30}{2g}$ = $\frac{ u^{2} }{8g}$

for α=60, 

maximum height = $\frac{ u^{2} sin^{2}60}{2g}$ = $\frac{3 u^{2} }{8g}$

So maximum height will increase.