Questions tagged [projectiles]

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Choosing a Constant Force Spring

I am trying to decide on a constant force spring to be used in a projectile launcher. The launch velocity will need to be approximately 15 m/s, which, with a barrel travel distance of 1 ft, equates to ...
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2answers
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Approaches to whether a projectile gets intercepted

Hi everyone, How do I approach questions like part (ii)? From what I understand now, I believe the shortest method is that as long as the ANGLE of the relative velocity of B with respect to velocity ...
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1answer
75 views

Wave torsion spring?

I'm building a catapult and I asked a question and got this response. Is there an equivalent for the wave spring but for angular motion like a torsion spring? Or any improved design on the torsion ...
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4answers
234 views

Vehicle emergency high-deceleration braking and steering system [closed]

I wish to investigate an active vehicle braking method for use in extreme situations. Very high accelerations are acceptable in situations where this would prevent the much worse accelerations present ...
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4answers
976 views

Is it possible to fire a ball of water that holds its shape?

Background I participate every year in a huge water balloon battle. The clash happens between two universities so you can imagine that the commitment, at least for some people, is quite high. To give ...