Originally posted by dertsthe needle is stationary ?
Well done - try this one for size:
A vinyl record measures 32cm across. There is a 1cm margin round the edge and a centre label, which measures 10cm across. There are 30 grooves per cm. How far does the needle travel if the record is played from start to finish?
Originally posted by TheMaster37Okay, you got me there 37. I must admit that my knowledge of defunct technologies such as this is quite limited. You correctly point out that not enough information is provided to give an exact answer. How does > 10 cm strike ya? 😕
Your needles travel in a straight line from rim to centre?
I tihnk not, the needle is on a fixed arm, it's distance to the pivot remains the same.
Originally posted by leisurelyslothAye, I can agree with you on that 🙂
Okay, you got me there 37. I must admit that my knowledge of defunct technologies such as this is quite limited. You correctly point out that not enough information is provided to give an exact answer. How does > 10 cm strike ya? 😕