Practise improving measurement quality by taking repeated readings, averaging them, increasing useful range and recognising scatter as a source of random error.
One end of a wire is connected to a fixed point. A load is attached to the other end so that the wire hangs vertically.
The diameter d of the wire and the load F are measured as
For the measurement of the diameter of the wire, state
how random errors may be reduced when using the instrument in (i).
take several readings (and average)
M1
along the wire or around the circumference
A1