Question

why spanner has long arm?​

Answer 1

Answer:

A spanner with a long handle is preferred to tighten screw in heavy vehicles because it required less force to be applied. Explanation: ... When the length of the spanner's lever arm (i.e.,) the handle is more, then less force is required to produce the moment of force .

Answer 2

⎝⎝⫷⫸⎠⎠ANSWER⎝⎝⫷⫸⎠⎠

Spanner has a long handle to produce larger turning moment and small force is applied at the end of handles.