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				| 1. | What will be the work done force P if another load external load F’ causes deflection Δ’ in the above question? | 
| A. | 1⁄4P Δ’ | 
| B. | 1⁄3P Δ’ | 
| C. | 1⁄2P Δ’ | 
| D. | P Δ’ | 
| Answer» E. | |