My Rube Goldberg machine uses 5 simple machines. First a ball (wheel )rolls down a ramp and hits the dominoes (lever). The last domino (lever)hits a hammer (wedge)and the hammer (wedge)hits the ball (wheel) and it goes down another ramp. The ball (wheel) goes up the sesaw (lever)and rolls down another ramp and falls into a pully and removes the car (wheel) and it rolls down a ramp and falls into a cup.
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