In reply to mannj004:
To OP:
Latest tools are made with ergonomic handles and are designed to be used leashless. Most climbers that aren't hotshots, or professionals, are afraid to go leashless.
To answer this need there is an eye where you can clip a lanyard (see grivel lanyard) product to.
The link here can be problematic:
1)If it's too big the carabiner is across from your hand and a hindrance. 2)Sometimes when your hand is not on the handle the crab can even walk on your handle and get stuck there.
Some people get round that by threading that eye with wire (wedged) or thin rope (knotted).
Can you design a link that tick the following boxes:
1) is easily clipped AND unclipped.
2) is as strong as the lanyard for an eventual fall (they haven't got high fall ratings anyways)
3) does not impede hand placement.
4) does not freeze.
5) is small and unobtrusive.
There are lots of other features to think off in this light.
Have you ever handled an axe? Could you try somewhere round you? (indoor, outdoor...) That will help your understanding and surely can be included in your research paper.
If you just copy and paste the problems/ideas pointed out to you here, you might get the A* (or not), but you will have gain little. However, if you think through and use all the suggestions, then you will get something out of it. GCSE can be an empty ticket or a meaningful one, depending on how you tackle it.
BTW, this post should also teach you a bit about banter, cynism... not necessarily a bad thing boy-o!