Question

A ball of mass m and 2m are projected with identical velocities from the same point making angle 30 degree and 60 degree with vertical axis . the ratio of their height attained by balls will be

Answer 1

the ratio will be 1:2 this is right

Answer 2

Answer:

H1 : H2 = 3

Explanation:

Horizontal velocity component = u sinx

Vertical velocity component = u cosx

Maximum height = Average velocity(Vertical component) x u cos30/g

Maximum height of the ball of mass m = ($u^{2}$*($cos30^{2}$)/2g

Maximum height of the ball of mass 2m = ($u^{2}$*$cos60^{2}$)/2g

The ratio of heights H1:H2 = $cos30^{2}$/$cos60^{2}$

     H1 : H2 = 3