Man of Honour
- Joined
- 29 Mar 2003
- Posts
- 57,747
- Location
- Stoke on Trent
I went along to a Manual Handling course this morning along with 11 other people and we were split into two groups.
There were 4 items on the table and we were asked to identify the one that was 7kg, 6kg, 5kg and 4 kg.
It just so happened that the small white box was the heaviest, followed by the second smallest box, then a bowl of water and then the lightest being a large flat pack containing a weight.
I had done the 'holding my arms out straight with the weight' trick to see how long I could hold each item and all 12 people agreed the order of weight.
The answer was a shock because all 4 items were 5kg each
I even stayed behind a bit holding the lightest & heaviest and they were definitely different but the scales in the room proved me wrong.
So what is the thought/science process behind this?
There were 4 items on the table and we were asked to identify the one that was 7kg, 6kg, 5kg and 4 kg.
It just so happened that the small white box was the heaviest, followed by the second smallest box, then a bowl of water and then the lightest being a large flat pack containing a weight.
I had done the 'holding my arms out straight with the weight' trick to see how long I could hold each item and all 12 people agreed the order of weight.
The answer was a shock because all 4 items were 5kg each

I even stayed behind a bit holding the lightest & heaviest and they were definitely different but the scales in the room proved me wrong.
So what is the thought/science process behind this?