Head Control (Science Experiments)

Materials Required:
l Chair
A friend

Procedure:

  1. Ask a friend to relax in a chair. He should fold his arms and stretch his feet as far forward as possible. Tell him to lean far back so that his head faces upward.
  2. Now press a fingertip onto his forehead and challenge him to get up from the chair without unfolding his arms or moving his feet. He will struggle, but will not be able to rise.

This Is What Happens:
Your friend must gain his balance before getting up from the chair. To do this, he must raise his head first. However, you are pressing down on his forehead and this prevents him from taking the first action.

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