Question

A spanner (or wrench) has a long handle. Why?

Answer 1

This is because the turning effect of body depends upon the perpendicular distance of line of action of the applied force from the axis of rotation.

Largest the perpendicular distance there is less force required to turn the body .

therefore spanner (wrench) is provided with a long handle .

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Answer 2

Answer:

A wrench has a long handle because the turning effect of a body depends upon the perpendicular distance of line of action of the applied force from the axis of rotation.