CAF123
Gold Member
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The way I thought of doing it initially was to use the well known trajectory equation y = x tanθ - \frac {g x^2}{2 v_o^2 cos^2 θ} and put in values for y and x depending on where the human cannonball is at specific stages of the journey.
For example, we want, at say x = 3m, y to be 15.50m. Here, my assumption is that 3m is the distance from the first wheel to the cannon. The only unknowns you have is v_o and θ.
I then took another stage in the journey say, right at the end, where y = 2.50 m and x is about (10.63 +6) ≈ 17m. Thus, I have two eqns and two unknowns which can be solved to yield some θ and v_o.
Is this method plausible? Of course, after getting some result, to get minimal velocity, you could tweak the distance from the cannon to the first wheel and see what happens.
For example, we want, at say x = 3m, y to be 15.50m. Here, my assumption is that 3m is the distance from the first wheel to the cannon. The only unknowns you have is v_o and θ.
I then took another stage in the journey say, right at the end, where y = 2.50 m and x is about (10.63 +6) ≈ 17m. Thus, I have two eqns and two unknowns which can be solved to yield some θ and v_o.
Is this method plausible? Of course, after getting some result, to get minimal velocity, you could tweak the distance from the cannon to the first wheel and see what happens.