- #1

rudransh verma

Gold Member

- 1,067

- 95

- Homework Statement
- A particle is projected vertically upward and it attains max height H. If the ratio of times to attain height h(h<H) is 1/3, find h.

- Relevant Equations
- ##s=ut+\frac12at^2##

Assuming it’s one body whose initial speed is u. First it attains height h then H. t1 and t2 are two times at which they attain h and H.

##h=ut1-\frac12gt1^2##

##H=ut2-\frac12gt2^2##

##\frac {t1}{t2}=1/3## Replacing t2 with 3t1, I am stuck.

##h=ut1-\frac12gt1^2##

##H=ut2-\frac12gt2^2##

##\frac {t1}{t2}=1/3## Replacing t2 with 3t1, I am stuck.