can somone help me with this

Answer: it is more for gravity to pull down so it goes slower
Explanation: if u pulled one its only one and not as heavy put if u pulled two it would go a little slower than 3 it might just barely move i really hopes this helps pls rate me
Answer:
since all the balls together are too heavy to swing the energy goes to the exact same amount of balls on the other side through traveling between the balls in the middle and then swings the same amount of balls.
Explanation: Hope it helps! Good luck dude