Student or Learner
I think this "would" denotes a habitual action in the past, right?
2p) Social campaigns have been organizedto fight against child labor in India. However, they were not so successful because the Indian people did not feel (that) their actions could make much difference. To change people's attitude toward the issue, a new style of advertising was attempted. Instead of putting posters on walls, a life-size child's [statue/status]holding up a heavy box above his head [was/were] placed in several shopping malls. The box was connected to a donation box by a rope. On the donation box was written "Your [distribution / contribution] can end child labor." Putting money (into the donation box)would lift the heavy box from the child's hands The advertisement immediately drew attention from the people.
Pope of the Dictionary.com Forum
However, I'm assuming from your description that the heavy box really was lifted out of the statue's hands by the rope. If that was the case, then every time someone put money in the collection, the box lifted up. I would say that is a habitual action.
The money collected was used to help real children not have to carry real heavy boxes, but at the collection point it was a heavy box and a statue of a child.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.