Question

to determine the diameter of a order student found a thread five times around the rod and measure the length of thread as 156 on a metre scale using this value heat activated the diameter of the rod if the actual diameter of the rod is 9.94 what is the error that could result in method followed by the student take Pi equal to 22 by 7​

Answer 1

Explanation:

Wrap the thread on a uniform smooth rod in such a way that the coils thus formed are very close to each other, Measure the length of the thread using a metre scale. the diameter of the thread's given by the relation.

Diameter= Length of thread/Number of turns.