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Grade 12Mechanics

Angle is not given.we need to find the minimum velocity required for a projectile to pass through a point (a,b)

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Profile image of Srilekha
8 Years agoGrade 12
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1 Answer

Profile image of Khimraj
8 Years ago
there will be minimum velocity required if maximum height point is (a,b)
then sin2\Theta = b2/(a2+ b2)
and max height is given by
h = vo2sin2\Theta/2g
2bg =vo2b2/(a2+ b2)
So vo2  = 2g(a2+b2)/b
and v\sqrt{2g(a^{2}+b^{2})/b}