Do screwdrivers and wrenches belong to axles? Why?
The opening part of the wrench is an axle, and the handle part is a wheel, namely, the longer the handle, the longer the force arm, and the more labor saving.
Screwdrivers and wrenches are axle characteristics, screwdriver metal parts for wheel shaft, handle, the handle is more and more rough.
Are allA machine consisting of wheels and shafts, capable of rotating around a common axis, called a wheel shaft.
