Question

A plant pruner (cutter) with two studs P and Q are shown on the left in open and closed positions. Which options(s) will allow the pruner to return to its open position?

• A. Fig A
• B. Fig B
• C. Fig C
• D. Fig D

Hint:

Differentiate between compression springs (visible gaps between coils or scroll layers) and tension springs (coils touching tightly). Mechanisms requiring separation always rely on compression or torsion elements.

Answer 1

The Correct Option is A

Step 1: Find the spring action.
The spring must store energy when the handles close and push them apart on release.
Step 2: Check geometry at P and Q.
Only one spring layout spans studs P and Q so it expands back to the open position.
\[ \boxed{\text{Option 1 (Fig A)}} \]