INVESTIGATION+OF+THE+FORCES+NEEDED+TO+BALANCE+A+SEESAW

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=INVESTIGATION OF THE FORCES NEEDED TO BALANCE A SEESAW=
 * 1) Balance the apparatus using a small piece of plasticine stuck on the underside.
 * 2) Place 4 masses on the left hand side at the eighth line (this is at the edge of the lever).
 * 3) Locate the position at which 4 masses would be placed on the right hand side to balance the lever.
 * 4) Copy the table below and use it to record the positions of the masses each time.
 * 5) Now reduce the left hand masses to 3 at the eighth line and locate the new position where 4 masses will balance them.
 * 6) Continue to set up each of the balancing situations and record each time where the 4 masses on the right would be located.
 * 7) After the first eight situations, A-H, try to work out a simple rule which can predict where the masses would be placed.
 * 8) Try to predict the answers to the situations after H and then verify them on the lever