Homework Statement
A particle of mass m is attached to one end of a light elastic string of natural length a and modulus mg, the other end of the sting is attached to a fixed point O on smooth horizontal surface. The particle is released from rest at horizontal distance a+L from O...
Homework Statement
where
x=(4aV^2tan\alpha)/(V^2+2ag+2agtan^2\alpha)
where a, V, g are constant. g is gravitational field strangth.
what is the greatest value of x as \alpha varies?
how do i even start?
Homework Equations
The Attempt at a Solution
Homework Statement
A smooth sphere A impinges obliquely on a stationary sphere B of equal mass. The directions of motion of sphere A before impact and after impact make angles α and β respectively with the line of centres at the instant of impact.
show that cotβ=((1-e)cotα)/2
where e...