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Ball launcher project

  1. Sep 23, 2015 #1
    Hi! I am making a physics project and I need to throw a ball to a target which is 5 meters ahead. I will use 2 counter rotating wheels to throw the ball but I have no idea what should motors torque or rpm should be. I tried to calculate it with determining the velocity first but the ball needs to bounce in 6 meters after they get through the target. About 30m/s I calculated a torque like 40nm using 1/2mv2=2τΔθ . But I'm not sure if 30m/s is enough or too much. I need a velocity which is not too much so it can get to the ground in 11m but also not too little so I can take aim easily without aiming too above. I would be happy if you could help me about it. Also I would be happy if you help me about the rpm of the motors.
    Edit: Balls mass is 270 grams.
     
  2. jcsd
  3. Sep 25, 2015 #2

    Simon Bridge

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    Welcome to pf,
    Why not get some motors that are handy and try it?

    (To get the bounce right, you will need some trial and error anyway.)
     
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