I asked Ian to creat something new, and he built a working TREBUCHET.
throwing arm is a #6 beam and the counter-weight is a series of #3 and #2 beams.
The projectile is a pink cardboard pig.
As the counter-weight descends,
the throwing arm pivots and the pig flies.
I used the same set-up, but now the throwing arm is the "pounding" arm.
I attached a line to the arm and ran it under the structure and back to the right.
Pulling on the line makes the arm pivot down and pounds the #4 beam into the ball of aluminum.
Here's a close-up of the arm hitting the top of the #4 beam
I laid a piece of styrofoam across a pair of #2 beams.
CATAPULT-differs from a trebuchet in that there is no falling counter-weight.
The arm is made of 3 #6 beams bolted together.I attached a line to the end
of the arm and ran it down under the white sheave ( the sheave is hidden to the left of the brick)
Pull down on the line, and the arm pivots up and flings the "load".