Questions tagged [projectiles]

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Ball immersed into a fluid

A plastic ball is pushed inside the tank and then released, can anyone plot velocity vs time and velocity vs height as long as ball is completely inside the water? For simplicity we can assume no ...
Venkat's user avatar
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1 answer
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Computing distance traveled jumping from moving vehicle

Ok, here's the background: I'm a BASE jumper and usually I jump from stationary objects like bridges, cliffs, etc. But one jump I would love to do at some point involves exiting from the roof of a ...
adamcasey's user avatar
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3 answers
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How to visualize isometric parallel projection?

I read the definition of Isometric Projection from this pdf that Projection plane intersects each coordinate axis in which the object is defined (principal axes) at the same distant from the origin. ...
S. M.'s user avatar
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Determining range of projectile

Lets say i am using a counterweight and a weight on the other end of an arm (that i want to launch like a trebuchet)- im not sure how to find the formula between the range of motion and the weight (...
Johnny's user avatar
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What is a line launcher

Okay, so I think that a line launcher is a device used in rescues? What I’m unsure please about is how they work, like the Batman grapple gun (is that a line launcher) or like a line launcher gun ...
Johnny's user avatar
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2 answers
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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 ...
Gara's user avatar
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2 answers
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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 ...
Ong Chee Wei's user avatar
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1 answer
138 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 ...
tox123's user avatar
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4 answers
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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 ...
sloupioc's user avatar
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6 votes
4 answers
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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 ...
Vladimir Cravero's user avatar