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usha
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Homework Statement
A particle of mass m is thrown upward with velocity v and there is retarding air resistance proportional to the square of the velocity with proportionality constant k. if the particle attains a maximum height after time t, and g is the gravitational acceleration, what is the velocity v?
Homework Equations
The Attempt at a Solution
if i take D=kv2 and now two forces act on the particle F=mg and the retarding force but the options here are a) √(k/g)tan[√(g/k)t]
b)√(gk) tan [√(g/k)t]
c) √(g/k) tan[√(gk)t]
d) √(gk) tan[√(gk)t]
so i m having problem in figuring out how this tan factor come in ...