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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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    Science Advisor
    Homework Helper

    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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