Question

a tight knot can be opened easily by using a long spanner.Why??​

Answer 1

Answer:

This torque can be quite big. To overcome it you need to apply a torque equal or bigger than that in the opposite direction. As torque equals Force*Lever the longer lever you choose the smaller the force you have to apply. It is much easier to loosen a bolt using a long spanner than a short one.

Explanation:

please do follow me